Critical angle is that incident angle in denser medium for which angle of refraction is.

Transformer is a device which steps up or steps down the input:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Laws of motion describes?

The young’s modulus of a given rod of uniform length ? is given by the relation:

ETEA 2018
Physics
Physics of Solids
Elimination Tool:

What is the quark composition of a Proton?

NUMS Mock 2
Physics
Nuclear Physics

How much more thumb pressure must a nurse use to administer an injection with a hypodermic needle of inside diameter 0.30 mm compared to one with inside diameter 0.60 mm? Assume that the two needles have the same length and that the volume flow rate is the same in both cases.

NUMS 2015
Physics
Fluid Dynamics
Elimination Tool:

the value of permeability

If the potential difference between the plates of a capacitor with capacitance C is 4V, how much charge will accumulate on each of its plate?

) Twin paradox Is consequence of?

In an inelastic collision, Momentum is _____ and Kinetic Energy is ______ respectively.

NUMS 2019 Reconduct
Physics
Forces and Motion
Elimination Tool:

Energy required to charge a capacitor of 5 micro farad by connecting D.0 source of 20 KV is a) 10kJ b) 5k1 c) 21:.1 d) 11(1

If a stationary bar magnet is placed near a coil so that maximum lines of force passes through the coil, the galvanometer shows:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Two capacitors C1 = 2μF and C2 = 4μF, are connected in series across a 100 V supply.

Find the effective capacitance:

NTS 2010
Physics
Electrostatics
Elimination Tool:

Bragg’s Law for measurement of wavelength à. of i-rays, using crystal lattice planes having distance d between each other, for constructive interference for integral multiple of i is.

NTS 2019
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

In half wave rectification, the output DC voltage is obtained across the load for?

PMC Practice 10
Physics
Electronics
Elimination Tool:

When wood is replaced by air as dielectric. The capacitance of capacitor

Trough of a wave acts as:

NUMS 2020
Physics
Wave Motion and Sound
Elimination Tool:

For projectile motion, in the absence of air resistance:

UHS 2019
Physics
Motion in Two Dimensions
Elimination Tool:

A ball is thrown vertically upward with a velocity of 98 m/s. How long does it take to reach its highest point?

NTS 2016 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

An automobile is moving forwards with uniform velocity due to the force exerted by its engine. If the force is doubled with the velocity remaining constant what happens to its total power?

UHS 2019
Physics
Work, Power and Energy
Elimination Tool:

A semiconductor photodiode is a:

NTS 2011
Physics
Electronics
Elimination Tool:

Which of following has greatest energy

If Cp = 10 & Cv = 7, then the general gas constant equals:

A body with constant speed can still be accelerating. This statement Is:

The scalar product of (2i – j + 3k) . (31 + 2j – k) i?

NTS 2014
Physics
Scalars and Vectors
Elimination Tool:

R1 and R2 are two-position vectors making angles θ1 and θ2 with positive X-axis respectively. Their vector product is:

[R1 = 4 cm, R2 = 3 cm , e1 = 30 degrees , e2 = 90 ]

NTS 2011
Physics
Scalars and Vectors
Elimination Tool:

The moment of inertia of a solid sphere of mass ‘m’ having radius ‘r’ about a line passing through its center is:

NUMS 2019 Cancelled
Physics
Circular Motion and Momentum
Elimination Tool:

When a fluid is incompressible, it means:

FMDC 2018
Physics
Physics of Solids
Elimination Tool:

Energy emitted in the form of visible radiation is called:

2022 PMC Test 1
Physics
Electromagnetic Waves
Elimination Tool:

The efficiency of the carnot’s Engine Working between 150°C and 50°C is:

NTS 2011
Physics
Heat and Thermodynamics
Elimination Tool:

If spring constant is 2 and displacement is also 2 then sum of KE and PE?

The change in resistance of metallic conductor at temperature below 0 degrees is:

PMC 2020
Physics
Current Electricity
Elimination Tool:

The velocity of X rays is equal to that of:

NUMS 2018
Physics
Atomic Spectra
Elimination Tool:

Displacement of an object with respect to a constant moving (v) frame in the same direction is:

PMC Sample 1
Physics
Forces and Motion
Elimination Tool:

A bomber drops a bomb when it is vertically above the target. It misses the target because of the:

NUMS 2014
Physics
Gravitation
Elimination Tool:

The bicycle pump works on the basis of:

NUMS 2020
Physics
Heat and Thermodynamics
Elimination Tool:

If a substance can undergo plastic deformation, until it breaks, it is:

NUMS 2016
Physics
Physics of Solids
Elimination Tool:

Bright Lines in pattern show:

PMC Practice 5
Physics
Atomic Spectra
Elimination Tool:

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:

A nucleus consists of 19 protons and 20 neutrons. The conventional symbol of this nucleus is:

NTS 2013
Physics
Atomic Spectra
Elimination Tool:

Who was awarded Nobel Prize (1921) for explanation of Photoelectric Effect?

Which of the following is a unit of Work?

1 rad is equal to how many degrees

In SI units, the unit of Candela is used for the measurement of:

NTS 2016 DUHS & JSMU
Physics
Measurements
Elimination Tool:

Lenz’s law in electromagnetic induction is the direct consequence of the principle of conservation of:

NUMS Mock 2
Physics
Magnetism and Electromagnetic Induction

With the usual notation, the first law of thermodynamics applied to one mole of an ideal gas can be written in the following form:

CvΔT=ΔQ – PΔV

In a change for which Boyle’s law is obeyed, which of the following would necessarily be zero?

NTS 2017
Physics
Heat and Thermodynamics
Elimination Tool:

if electron is moving along positive x axis and where V= Sx*3 then it

Which of the following is not major application of electromagnetic induction

What happens to the pressure ‘p’ of an ideal gas, if the temperature is increased by a factor of 2 and the volume is increased by a factor of 8?

NUMS Mock 1
Physics
Heat and Thermodynamics

Which of the following statements is not true regarding the Newton’s third law of motion?

NUMS 2016
Physics
Forces and Motion
Elimination Tool:

When a potential difference is applied across the ends of a uniform wire of length l and radius r, a current I flows in the wire. If same potential difference is applied to the ends of another wire of the same material but of length 2l and radius 2r, the current in the wire is:

NUMS Mock 4
Physics
Current Electricity

Dimension of power?

_____ are such nuclei of an element that have the same mass number A, but have different charge number Z.

NUMS Mock 2
Physics
Atomic Spectra

S.I. Unit of rate of flow of a fluid :

NUMS 2018
Physics
Fluid Dynamics
Elimination Tool:

If both inputs “A” and “B” are ON and the output is also ON. This type of gate is known as:

NUMS Mock 2
Physics
Electronics

If three resistances RI, RI and R3 are connected In Parallel to the circuit such that RI> RI > RI. Which of the following will be true for the Equivalent Resistance R’?

The detection and estimation of an element in a mixture is sometimes nearly impossible, if it is present in very minute traces or if it’s chemical properties are very similar to those of other elements in the mixture. An effective technique is developed for these purposes is known as?

NTS 2014
Physics
Nuclear Physics
Elimination Tool:

Red light is used in photographic dark room because of:

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

Two spheres of the same size, one of mass 5 kg and the other of mass 50 g are dropped simultaneously from a tower. When they are about to touch the ground, they have the same:

NUMS 2015
Physics
Gravitation
Elimination Tool:

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 2017
Physics
Motion in Two Dimensions
Elimination Tool:

The maximum instantaneous value measured from zero value is known as?

PMC Sample 3
Physics
Alternating Current
Elimination Tool:

A diffraction grating has 500 lines per mm, its grating element d is equal to:

UHS 2018
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

A train is approaching a station at 90 km/h sounding a whistle of frequency 1000 Hz. What will be the apparent frequency heard by the listener sitting on the platform if the train moves away from the station at the same speed? (speed of sound= 340 m/s)

NTS 2015 DUHS and JSMU
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

The concept of work function was given by:

PMC Sample 2
Physics
Dawn of Modern Physics
Elimination Tool:

In S.H.M which of the following remains constant?

If modulated signal frequency is represented by fm, carrier frequency by fc, fmin and fmax represent minimum and maximum values respectively, then the lower sideband refers to the range:

NTS 2016 SMBBMC
Physics
Wave Motion and Sound
Elimination Tool:

When an electron jumps from outer to 5th orbit, then the spectral lines fall into region.

For the horizontal pipe, the fluid inside it is flowing horizontally then Bernoulli’s
equation can be written as

UHS 2014
Physics
Fluid Dynamics
Elimination Tool:

The half-life of Iodine Is

If you wish to decrease the resistance of a circuit, you will add the resistors in ________.

NTS 2014
Physics
Current Electricity
Elimination Tool:

The output voltage of a rectifier is:

PMC Practice 4
Physics
Alternating Current
Elimination Tool:

A and B are bulbs connected in series with 40-volt battery and a bulb C is connected with 40-volt battery Glow of bulbs will be:

1 pascal = atm

Which one of the following physical quantity does not the dimension of force per unit area

ETEA 2019
Physics
Measurements
Elimination Tool:

Apparent weight of a body In an elevator accelerating downwards is given by

When we measure the nuclear masses and compare them with the masses of the constituent nucleus in free states, the mass of the nucleus is always less than the mass of the constituent nucleons. The difference in mass is known as:

NTS 2015 DUHS and JSMU
Physics
Nuclear Physics
Elimination Tool:

Which experimental technique reduces the systematic error of the quantity being investigated?

ETEA 2017
Physics
Measurements
Elimination Tool:

A sound wave travels with a speed of 330ms−1 in air. If the wavelength of the wave is 3.3m, then the frequency of the wave is ______.

PMC Sample 2
Physics
Wave Motion and Sound
Elimination Tool:

A vector having magnitude equal to one is called

The energy of an X-ray quantum of wavelength 1.0 x 10-10 m is:

NTS 2012
Physics
Dawn of Modern Physics
Elimination Tool:

The scalar or Dot product of Vectors (3i – 2j + 4k) and (2i + 2j – 3k) is _____.

NTS 2019
Physics
Scalars and Vectors
Elimination Tool:

What will be the energy stored In an inductor of length 2m if a current of 10A passes through it

In medical scanning, which rays are used?

PMC Practice 18
Physics
Electromagnetic Waves
Elimination Tool:

1 testa is equal to?

A car at rest starts moving with linear uniformly increasing velocity. After 20 seconds, it attains the maximum velocity of 80 m/s. What is the distance covered during this time interval?

NUMS 2019 Cancelled
Physics
Forces and Motion
Elimination Tool:

A wheel starts rotating from result with angular acceleration of 2 rads-2 till its angular speed becomes 6 rad/s. The angular displacement of the wheel will be equal to:

NUMS Mock 3
Physics
Circular Motion and Momentum

A full wave rectifier uses load resistor of 1500 Ω. Assume the diodes have Rf= 10 Ω, Rr= ∞. The voltage applied to diode is 30V with a frequency of S0Hz. Calculate the AC power input.

PMC Practice 14
Physics
Electronics
Elimination Tool:

A full wave rectifier is operating from 50 Hz mains, fundamental frequency of ripple will be

PMC Sample 2
Physics
Electronics
Elimination Tool:

A proton has mass m and charge q. It is suspended in electric and gravitational field. What is the magnitude of electric field?

PMC Sample 3
Physics
Electrostatics
Elimination Tool:

If an Electromagnetic wave is plane polarized, then the direction of electric field and magnetic field will be

If two sounds have the same wavelength in air at the same temperature, what other property must they also have in common?

Intensity
Amplitude
Frequency
NTS 2017
Physics
Wave Motion and Sound
Elimination Tool:

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?