Physics Practice Test 3

Physics Practice Test 3 is designed to help students strengthen their understanding of key physics concepts, formulas, and principles for competitive entry tests like MDCAT, NUMS, AKU, UET, ECAT, NTS, as well as FSC Board Exams. This test covers topics from waves, oscillations, sound, and light, helping students improve accuracy and problem-solving skills.

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Physics Practice Test 3

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1 / 100

Category: Physics Ch 5 Class 11

A 800 kg car is turning round a corner at 6 m/sec as it travels along an arc of circle of radius 12 m. The magnitude of force exerted by pavement on the tyres to hold the car in circular path is _________.

NUMS 2019 Reconduct
Physics
Circular Motion and Momentum
Elimination Tool:

A) 2400 N

B) 1200 N

C) 400 N

D) 4800 N

2 / 100

Category: Physics Ch 13 Class 12

What is the constant of proportionality in ohms law:

1/R

3 / 100

Category: Physics Ch 10 Class 11

Red light is used in photographic dark room because of:

NUMS 2020
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

A) More frequency, less wavelength

B) Less frequency, less wavelength

C) Less frequency. more wavelength

D) More frequency. more wavelength

4 / 100

Category: Physics Ch 6 Class 11

When fluid is incompressible, it means:

NUMS 2018
Physics
Fluid Dynamics
Elimination Tool:

A) No internal frictional force

B) Independent of coordinates

C) Independent of time

D) Its density remains constant

5 / 100

Category: Physics Ch 21 Class 12

Which of the following Is not true about radioactivity?

Is a nuclear phenomenon

Is not altered by any physical change

Is not altered by any chemical change

Is a property relating to outside the nucleus.

6 / 100

Category: Physics

An object is thrown vertically upward with a velocity of 20 m/s. How much time it will take to reach the highest point?

NUMS Mock 2
Physics
Motion in Two Dimensions

A) 2 sec

B) 4 sec

C) 1 sec

D) Insufficient information

7 / 100

Category: Physics Ch 21 Class 12

Which of the following gives the correct expression of Decay Constant?

8 / 100

Category: Physics Ch 13 Class 12

One kilowatt-hour is commonly termed as one commercial unit of electric energy which is equal to:

PMC 2020
Physics
Current Electricity
Elimination Tool:

A) 3.6 x 105 J

B) 3.6 x 106 J

C) 3.6 x 104 J

D) 3.6 x 103 J

9 / 100

Category: Physics

Q.170 The phase angle between two points in a medium is I the distance between these points is 20 cm, then wavelength of the wave is?

A. 8/15 m

B. 15/8 m

C. 8/15 cm

D. 15/8 cm

10 / 100

Category: Physics Ch 17 Class 12

If stress is applied on a body then the ratio of change in volume to original volume will be:

NUMS 2016
Physics
Physics of Solids
Elimination Tool:

A) Polymeric strain

B) Volumetric strain

C) Parallel strain

D) Tensile strain

11 / 100

Category: Physics Ch 11 Class 11

Absolute zero is equivalent to:

NUMS 2019 Cancelled
Physics
Heat and Thermodynamics
Elimination Tool:

A) 0K

B) -273 C

C) -459.4 F

D) All of these

12 / 100

Category: Physics

Q.148 Which of the following can have negative temperature of coefficient?

A. Compounds of silver

B. Liquid metals

C. Metallic alloys

D. Electrolytes

13 / 100

Category: Physics Ch 1 Class 11

A metal sphere of radius r is dropped into a tank of water. As it sink at speed v, it experience a drag force F given by F= krv, where k is a constant: What are the SI base units of k?

ETEA 2017
Physics
Measurements
Elimination Tool:

A) kg m2s-1

B) kg m2s-2

C) kg m-1s-1

D) kg ms-2

14 / 100

Category: Physics

Q.75 Velocity is a

A. tensor

B. vector

C. Scalar

D. None of these

15 / 100

Category: Physics Ch 4 Class 11

A football, at rest on the ground, is kicked with an initial velocity of 10 m/s at a launch angle of 30°. Calculate its total flight time, assuming that air resistance is negligible.

NTS 2014
Physics
Motion in Two Dimensions
Elimination Tool:

A) 0.5 s

B) 1 s

C) 1.7 s

D) 2 s

16 / 100

Category: Physics Ch 17 Class 12

Young modulus for the perfectly rigid body is

Infinity

17 / 100

Category: Physics Ch 7 Class 11

In simple harmonic motion, acceleration will be maximum, when object is at:

UHS 2019
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

A) Maximum displacement from the mean position

B) Center position

C) Half of the maximum displacement from mean position

D) Mean position

18 / 100

Category: Physics

Q.169 A metallic sphere of diameter 30 cm, carries a charge of 600 mC. Find electric field intensity at surface of sphere?

A. 54 × 103NC–1

B. 54 × 107NC–1

C. 13.5 × 103NC–1

D. 2.4 × 108NC–1

19 / 100

Category: Physics

Q.174 Vector is quantity which

A. Has direction

B. Has magnitude

C. Follow rules of vector addition

D. Both direction and magnitude

20 / 100

Category: Physics

A red colored cloth red light

Transmit

Reflect

Refract

Absorbs

21 / 100

Category: Physics Ch 18 Class 12

A cable 4 km long and of total resistance 1 Ohm carries electric current from a generator producing 100kW at 10,000 Volts. The current in amperes in the cable is:

PMC Practice 5
Physics
Electronics
Elimination Tool:

A) 10

B) 10,000

C) 1000

D) 100,000

22 / 100

Category: Physics Ch 21 Class 12

Which of the following is an instrument for monitoring radiations:

NUMS 2016
Physics
Nuclear Physics
Elimination Tool:

A) GM tube

B) Radar

C) Wilson cloud chamber

D) All of the above

23 / 100

Category: Physics Ch 13 Class 12

How much energy is dissipated as heat in 20 s by a 100 Ω resistor that carries a current of 0.5 A?

NTS 2014
Physics
Current Electricity
Elimination Tool:

A) 50 J

B) 100 J

C) 250 J

D) 500 J

24 / 100

Category: Physics Ch 2 Class 11

What is the angle made by the vector -i-5j with x-axis?

tan-1 (1/5)

90 + tan-1 (1/5)

180 + tan-1 (1/5)

270 – tan-1 (1/5)

25 / 100

Category: Physics Ch 19 Class 12

Name the scientist who won the noble prize for discovery of energy quanta

Maxwell

Newton

Plank

Einstein

26 / 100

Category: Physics

The time duration between two consecutive heartbeats of a normal human being is

8×10^-1 s

10^-1s

0.5s

27 / 100

Category: Physics Ch 20 Class 12

The ratio of wavelength of last line of Balmer series and last line of lymen series is

PMC Sample 2
Physics
Atomic Spectra
Elimination Tool:

A) 2

B) 1

C) 4

D) 0.05

28 / 100

Category: Physics Ch 8 Class 11

A traveling wave, in which the particles of the disturbed medium move perpendicular to the direction of propagation of the wave is called:

NUMS 2019 Reconduct
Physics
Wave Motion and Sound
Elimination Tool:

A) Transverse wave

B) Longitudinal wave

C) Standing wave

D) shock wave

29 / 100

Category: Physics Ch 16 Class 12

RLC circuit can be excited by

Both a and b

None of these

30 / 100

Category: Physics

Q.129 What is the relationship between Power, Current and Resistance?

A. P-IR

B. P-I^2R/2

C.P=IR

D. All of them

31 / 100

Category: Physics Ch 15 Class 12

Characteristic x-rays are produced by:

PMC 2021 Tested
Physics
Electromagnetic Waves
Elimination Tool:

A) Photons

B) All of these

C) Electrons

D) Protons

32 / 100

Category: Physics Ch 10 Class 11

In going form a denser to rarer medium a array of light is

undeviated

bent away form the normal

bent towards the normal

polarized

33 / 100

Category: Physics Ch 5 Class 11

A disc, a hoop, and a sphere of the same mass and radius are rolled down from a frictionless, inclined plane. Which has a greater speed on reaching the ground?

NUMS 2019 Cancelled
Physics
Circular Motion and Momentum
Elimination Tool:

A) Disc

B) Loop

C) Sphere

D) All have the same speed

34 / 100

Category: Physics Ch 5 Class 11

A bicycle wheel of radius 0.70 m is turning at an angular speed of 6.3 rad/s as it rolls on a horizontal surface without slipping. What is the linear speed of the wheel?

1.4 m/s

0.11 m/s

28 m/s

4.4 m/s

35 / 100

Category: Physics Ch 3 Class 11

A bullet of mass 20g leaves the gun with a velocity of 200 m/s. If the mass of gun is 2kg then the speed of recoil of the gun is:

NUMS 2019 Cancelled
Physics
Forces and Motion
Elimination Tool:

A) 2000 m/s

B) 2 m/s

C) 20 m/s

D) 200 m/s

36 / 100

Category: Physics Ch 9 Class 11

How can we define linear magnification produced by a lens?

NTS 2015 SMBBMC
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

A) The ratio of the object distance to the image distance

B) The ratio of the image distance to the focal length

C) the ratio of the size of the object to the size of the image

D) the ratio of the size of the image to the size of the object

37 / 100

Category: Physics Ch 10 Class 11

If an object is placed away form ‘2f’ of a converging lens, then the image will be

Real and erect

Virtual and erect

Real and inverted

Virtual

38 / 100

Category: Physics

Q.127 Which unit is used in the measurement of Displacement?

A. m

B. m/s

C. 1/s

D.N

39 / 100

Category: Physics Ch 1 Class 11

The unit of velocity is:

PMC Sample 2
Physics
Measurements
Elimination Tool:

A) m

B) m s

C) m / s

D) m / s^2

40 / 100

Category: Physics Ch 16 Class 12

Current that fluctuates periodically with time is ——

PMC Practice 4
Physics
Alternating Current
Elimination Tool:

A) DC current

B) BC current

C) ACcurrent

D) Magnetic current

41 / 100

Category: Physics Ch 20 Class 12

Laser light is

Monochromatic

Intense

Coherent

All of these

42 / 100

Category: Physics Ch 7 Class 11

A wave passes through a medium; each particle of the medium performs 100 complete vibrations in 5 seconds. What is the frequency of the wave?

PMC Practice 3
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

A) 2 Hz

B) 20 Hz

C) 4 Hz

D) 40 Hz

43 / 100

Category: Physics Ch 20 Class 12

The anti-particle of quark is _________.

PMC Practice 5
Physics
Atomic Spectra
Elimination Tool:

A) Electrons

B) Protons

C) Neutrons

D) None of these options is correct

44 / 100

Category: Physics Ch 19 Class 12

What will the de Broglie wavelength of a 150 g mass moving with a velocity of 50 m/s be?

PMC 2021 Tested
Physics
Dawn of Modern Physics
Elimination Tool:

A) 1000 m

B) 9 x 10⁻²⁵ m

C) 9 x 10⁻³⁵ m

D) 5 x 10⁻³⁵ m

45 / 100

Category: Physics

If a pendulum is oscillating with a frequency f then what is the frequency at which it’s K.E. changes?

NUMS Mock 2
Physics
Oscillations and Simple Harmonic Motion

A) 2f

B) f/2

C) F

D) None of these

46 / 100

Category: Physics Ch 1 Class 11

Which set of the prefixes gives values in increasing order?

UHS 2014
Physics
Measurements
Elimination Tool:

A) Pico, Mega, Kilo, Tera

B) Pico, Micro, Mega, Giga

C) Tera, Pico, Micro, Kilo

D) Giga, Kilo, Milli, Nano

47 / 100

Category: Physics Ch 16 Class 12

The use of a capacitor filter in a rectifier circuit gives satisfactory performance only when the load:

PMC Practice 3
Physics
Alternating Current
Elimination Tool:

A) Current is high

B) Current is low

C) Voltage is high

D) Voltage is low

48 / 100

Category: Physics Ch 10 Class 11

Unit of power of a lens is

Meter

watt

dioptre

horsepower

49 / 100

Category: Physics Ch 12 Class 12

When a charged particle is projected perpendicular to a magnetic field:

NUMS 2016
Physics
Electrostatics
Elimination Tool:

A) Its path is circular in a plane perpendicular to the plane of magnetic field

B) The speed and kinetic energy of the particle remains constant

C) The velocity and momentum of the particle changes only in direction

D) The time period of revolution, angular and frequency of revolution is independent of velocity of the particle and radius of circular path

50 / 100

Category: Physics Ch 4 Class 11

Escape velocity of moon is

2.38 km/s

3.38 km/s

4.38 km/s

5.38 km/s

51 / 100

Category: Physics Ch 14 Class 12

A 3-cm length of wire is moved at right angles across a uniform magnetic field with a speed of 2.0 m/s . If the flux density is 5.0 teslas, what is the magnitude of the induced e.m.f?

NTS 2016 DUHS & JSMU
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

A) 0.03 V

B) 0.3 V

C) 0.6 V

D) 10 V

52 / 100

Category: Physics Ch 14 Class 12

A bar magnet has a magnetic moment 200 Am2. The magnet is suspended in a magnetic field of 0.30 NA-1m-1. The torque required to rotate the magnet from its equilibrium position at an angle of 30˚ will be:

NUMS 2014
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

A) 30Nm

B) 3073 Nm

C) 60Nm

D) 604Nm

53 / 100

Category: Physics

Q.138 The nucleus shape is considered to be

A. Square

B. Rectangle

C. Sphere

D. Circular

54 / 100

Category: Physics Ch 12 Class 12

A particle carrying charge of 2e falls through a potential difference of 3.0 V. Calculate energy acquired by it.

NTS 2015 DUHS and JSMU
Physics
Electrostatics
Elimination Tool:

A) 9.6 x 10-19J

B) 12.1 x 10-19J

C) 14.5 x 10-19J

D) 16.7 x 10-19J

55 / 100

Category: Physics Ch 19 Class 12

The value and units of the Planck constant ‘h’ can be expressed as:

UHS 2019
Physics
Dawn of Modern Physics
Elimination Tool:

A) 3.63 x 10-34 Js

B) 6.63 x 10-34 Js-1

C) 6.63 x 10-34 Js

D) 6.63 x 10-43 Js

56 / 100

Category: Physics Ch 8 Class 11

How many types of modulations are possible with sinusoidal carrier?

NTS 2016 SMBBMC
Physics
Wave Motion and Sound
Elimination Tool:

A) Only one

B) Two

C) Three

D) Four

57 / 100

Category: Physics Ch 16 Class 12

In a step-down transformer, the current in the primary coil is ______ than that in the secondary coil.

PMC 2021 Tested
Physics
Alternating Current
Elimination Tool:

A) None of these

B) More

C) Equal

D) Less

58 / 100

Category: Physics Ch 4 Class 11

From the given options, which one lists the amount of work done from smallest to Largest displacement is In forward direction?

59 / 100

Category: Physics Ch 18 Class 12

Which option in the following best explains Base of a transistor?

NUMS 2017
Physics
Electronics
Elimination Tool:

A) Base has no impurity

B) Base has less concentration of impurity as compared to emitter and collector

C) Base has more concentration of impurity as compared to emitter

D) Base has more concentration of impurity as compared to collector

60 / 100

Category: Physics

Q.112 A beam of electrons can

A. reflect

B. refract

C. both

D. none of these

61 / 100

Category: Physics Ch 13 Class 12

When a wire is compressed and it’s radius becomes 2R then it’s resistance will be:

PMC 2020
Physics
Current Electricity
Elimination Tool:

A) 16R

B) 4 R

C) 1 / 16 R

D) 1 / 4 R

62 / 100

Category: Physics Ch 6 Class 11

In a river flow of water is maximum at

Middle

Top right corner

Top left corner

Same flow throughout

63 / 100

Category: Physics Ch 16 Class 12

What will be the Impedance for V = 10 sin(wt) and I = 20 sln(wt)

200 ohm

2 ohm

0.5 ohm

0.707 ohm

64 / 100

Category: Physics

Kirchhoff’s first law is manifestation of:

NUMS Mock 3
Physics
Current Electricity

A) Law of conservation of momentum

B) Law of conservation mass

C) Law of conservation of energy

D) Law of conservation of charge

65 / 100

Category: Physics Ch 4 Class 11

A bullet on penetrating 30cm into its target loses its velocity by 50%. What additional distance will it penetrate into its target before it comes to rest?

NUMS 2014
Physics
Motion in Two Dimensions
Elimination Tool:

A) 30 cm

B) 20cm

C) 10 cm

D) 5cm

66 / 100

Category: Physics Ch 11 Class 11

A machine worker placed a cylinder with a diameter of 18 cm between the plates of a hydraulic press. If he applies a 4.25 x 105N force to the cylinder, the stress on the end of the cylinder due to the applied force is A x 107Pa.

What is the value of A?

NUMS 2019 Cancelled
Physics
Heat and Thermodynamics
Elimination Tool:

A) 1

B) ½

D) 1.67

C) 1.3

67 / 100

Category: Physics Ch 12 Class 12

Which one is the correct statement about selenium?

PMC Sample 2
Physics
Electrostatics
Elimination Tool:

A) selenium is a good conductor

B) selenium is a good insulator

C) selenium is an insulator in the dark and becomes conductor when exposed to light

D) selenium is an conductor in the dark and becomes insulator when exposed to light

68 / 100

Category: Physics Ch 12 Class 12

60) What happens when a positive rod is placed near a neutral sphere?

Sphere is attracted towards rod and remains neutral

Sphere is attracted and negative charge is induced in it

Sphere is repelled and remains neutral

Sphere is repelled and positive charge is induced in it

69 / 100

Category: Physics

Which of the following is the angle of projection of a projectile if its range is equal to its height?

NUMS Mock 1
Physics
Forces and Motion

A) 48

B) 60

C) 90

D) 76

70 / 100

Category: Physics Ch 15 Class 12

Which of the following does not travel in vacuum?

PMC 2021 Tested
Physics
Electromagnetic Waves
Elimination Tool:

A) Transverse waves

B) Radio waves

C) Sound waves

D) Light rays

71 / 100

Category: Physics Ch 5 Class 11

Moment of inertia of a thin rod of mass m, length l about a line passing through its center is:

NUMS 2019 Cancelled
Physics
Circular Motion and Momentum
Elimination Tool:

B) ½ ml2

C) ⅓ ml2

D) ⅖ ml2

E) 1/12 ml2

72 / 100

Category: Physics Ch 21 Class 12

Which of the following is the percentage of the original quantity of a radioactive material left after five half–lives approximately.

NUMS 2016
Physics
Nuclear Physics
Elimination Tool:

A) 3%

B) 10%

C) 6.25%

D) 20%

73 / 100

Category: Physics Ch 16 Class 12

The bridge rectifier is preferred to an ordinary two diode full-wave rectifier because?

PMC Practice 2
Physics
Alternating Current
Elimination Tool:

A) It needs a much smaller transformer for the same output

B) No center tap required

C) Less PIV rating per diode

D) All of the above options are correct

74 / 100

Category: Physics Ch 3 Class 11

If force of 2.5N changes the velocity from 50 m/s to 100m/s in time 50. the mass of the body’

5 kg

2.5 kg

1 kg

10kg

75 / 100

Category: Physics Ch 4 Class 11

Which of the following statement shows that no work is done?

UHS 2019
Physics
Work, Power and Energy
Elimination Tool:

A) Pushing a car to start it moving

C) The moon Orbiting the earth.

B) Lifting the weights.

D) Writing an essay on a page.

76 / 100

Category: Physics Ch 5 Class 11

A body moving with an angular velocity of 1 rev/sec has a frequency of:

0.5 Hz

2 Hz

1 Hz

None of these

77 / 100

Category: Physics Ch 21 Class 12

To remove the huge amount of heat energy in a nuclear reactor, ______ is/are used.

NTS 2012
Physics
Nuclear Physics
Elimination Tool:

B) Control rods

C) Shielding

D) Moderators

E) Coolants

78 / 100

Category: Physics Ch 5 Class 11

A handball is tossed vertically upward with a velocity of 19.6 m/s. Approximately how high will it rise?

NTS 2016 DUHS & JSMU
Physics
Circular Motion and Momentum
Elimination Tool:

A) 15.8 m

B) 19.6 m

C) 25.6 m

D) 30 m

79 / 100

Category: Physics

In modern day electrical arrangements, which of the following is connected in series with the others?

Fan

Bulb

Tube Lights

None of these

80 / 100

Category: Physics

To remove the huge amount of heat energy in a nuclear reactor, _____ is/are used

NUMS Mock 4
Physics
Nuclear Physics

B) Control rods

C) Shielding

D) Moderators

E) Coolants

81 / 100

Category: Physics Ch 7 Class 11

The force applied on unit area to produce any change in the volume or length of a body is called:

NUMS 2017
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

A) Strain

B) Stress

C) Elasticity

D) Equilibrium

82 / 100

Category: Physics Ch 18 Class 12

In half-wave rectification, the output DC voltage is obtained across the load for ______.

PMC Practice 9
Physics
Electronics
Elimination Tool:

A) The positive half cycle of input AC

B) The negative half cycle of input AC

C) The positive and negative half cycles of input AC

D) Either positive or negative half cycle of input

83 / 100

Category: Physics Ch 7 Class 11

A spring of force constant 800 N/m has an extension of 5 cm, the work done in extending it from 5 cm to 15 cm

PMC Sample 3
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

A) 16 J

B) 8 J

C) 32 J

D) 24 J

84 / 100

Category: Physics

If a wave can be polarized, it means, it is:

NUMS Mock 4
Physics
Wave Motion and Sound

A) Longitudinal wave

B) Stationary wave

C) Superimposed wave

D) Transverse wave

85 / 100

Category: Physics Ch 21 Class 12

The half-life of Iodine Is

8 days

8 hours

15 days

) 15 hours

86 / 100

Category: Physics Ch 1 Class 11

The length and width of a rectangular plate are measured to be 15.3 mm and 12.50 mm. Find the area of the plate up to an appropriate number of significant figures.

NUMS 2017
Physics
Measurements
Elimination Tool:

A) 191.25 mm2

B) 195.8 mm2

C) 196 mm2

D) 200 mm2

87 / 100

Category: Physics Ch 14 Class 12

A current carrying conductor is lying perpendicular to magnetic field and experiencing some force. If the conductor rotates by 60 degrees counter clock wise, the force on it will

Increase

Decrease

Will be same

None of these

88 / 100

Category: Physics Ch 12 Class 12

What will be the change in potential energy if an electron moves 4.5m in the direction of an electric field of strength 325 N/C?

5.3 x I0 ^-16

2.3 x 10^16

Zero

89 / 100

Category: Physics Ch 5 Class 11

The angular velocity of a rotating disk increases from 2 rad/s to 5 rad/s in 0.5s. What is the disk’s average angular acceleration?

NTS 2015 SMBBMC
Physics
Circular Motion and Momentum
Elimination Tool:

B) 46 rad/s2

C) 36 rad/s2

D) 16 rad/s2

E) 6 rad/s2

90 / 100

Category: Physics Ch 18 Class 12

The half wave rectifier has how many diodes?

PMC 2021 Tested
Physics
Electronics
Elimination Tool:

A) 4

B) 1

C) 3

D) 2

91 / 100

Category: Physics Ch 13 Class 12

A battery has an e.m.f of 6.0 volts and an internal resistance of 0.4 ohm. It is connected to a 2.6 ohm resistor through a SPST (single pole, single throw switch):

When the switch is closed, the potential difference between the terminal Is, in volts is:

NTS 2010
Physics
Current Electricity
Elimination Tool:

A) 0

B) 0.8

C) 2.6

D) 5.2

92 / 100

Category: Physics Ch 7 Class 11

A force F = 0.12 N is applied on a spring and the spring elongates by 3 cm. The specific constant of the spring is?

NUMS 2017
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

A) 0.4 Nm-2

B) 40 Nm-1

C) 400 Nm-1

D) 4 Nm-1

93 / 100

Category: Physics Ch 2 Class 11

A particle moves from position r = 3i+2j-6k to r = 14i+13j+9k under the action of a Force F = 8i+2j+6k. Find the work done
by the force:

NTS 2010
Physics
Scalars and Vectors
Elimination Tool:

B) 75 units

C) 125 units

D) 155 units

E) 200 units

94 / 100

Category: Physics

Thirty joules of heat flow into a system. The system in turn does 50 Joules of work. The internal energy of the system has:

NUMS Mock 2
Physics
Heat and Thermodynamics

A) Increased by 80 joules

B) Decreased by 80 joules

C) Increased by 20 joules

D) Decreased by 20 joules

95 / 100

Category: Physics

Q.139 Peak voltage in the output of full wave rectifier is 10V so de component of the output voltage is

A. 10Ö2

B.20/ Ö2

C. 20p

D.20p

96 / 100

Category: Physics Ch 13 Class 12

A thermocouple is immersed in water at 373 K and the other in ice at 273K. The emf of the thermocouple Is 90 (μ)V for each 1 K difference in temperature between junctions, and the thermocouple resistance is 6 Ω. What current will flow in the galvanometer connected in series with an internal resistance of 30ohms?

NTS 2010
Physics
Heat and Thermodynamics
Current Electricity
Elimination Tool:

A) 1.8 μA

B) 250 μA

C) 300 μA

D) 1.5 mA

97 / 100

Category: Physics Ch 15 Class 12

Microwave is:

2022 PMC Test 3
Physics
Electromagnetic Waves
Elimination Tool:

A) An electromagnetic wave

B) Sound wave

C) Longitudinal wave

D) Standing wave

98 / 100

Category: Physics Ch 3 Class 11

Which of the following is the angle of projection of a projectile if its range is equal to its height?

NUMS 2020
Physics
Forces and Motion
Elimination Tool:

A) 48

B) 60

C) 90

D) 76

99 / 100

Category: Physics Ch 9 Class 11

The range of wavelengths for visible light is between _______.

NTS 2016 SMBBMC
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

A) 4.6 x 107 to 7.8 x 10 -7 m

B) 4.0 x 10 -7 to 7.6 x 10 -7 m

C) 4.0 x 10 -6 to 7.6 x 10 -6 m

D) 4.0 x 10 -8 to 7.6 x 10 -8 m

100 / 100

Category: Physics Ch 13 Class 12

Three resistors connected in series have Individual voltages labeled V1, V2, and V3, respectively. Which of the following expresses the value of the total voltage V, taken over the three resistors
together?

VT= V1 + V2 + V3

VT = V1= V2 = V3

VT = (1/V1 + 1/V2 + 1/V3)^-1

VT = (1/V1 + 1/V2 + 1/V3)

Your score is

The average score is 51%

Structured Practice for Best Entry Test Preparation

This topic-wise and chapter-wise practice test allows students to focus on individual physics concepts, numerical problems, derivations, and practical applications. Regular practice enhances understanding, sharpens problem-solving abilities, and builds confidence to tackle both board and competitive exam questions efficiently.

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