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

NTS 2019
Physics
Scalars and Vectors
Elimination Tool:

Physics is an experimental science which depends heavily on:

NTS 2016 SMBBMC
Physics
Dawn of Modern Physics
Elimination Tool:

Unit of magnetic flux density is

Which of following has greatest energy

When the force and the displacement are in the opposite directions, the work done by the force is ______.

NTS 2015 DUHS and JSMU
Physics
Forces and Motion
Elimination Tool:

A body starts sliding on a rough horizontal surface with a speed of 10 m/s. If the coefficient of friction is 0.2, find the distance traveled by the body before coming to rest. (g = 10m/s)

NUMS Mock 2
Physics
Forces and Motion

The speed of sound in air is 332 m/s. The speed of sound at 22 degrees centigrade will be:

PMC 2020
Physics
Wave Motion and Sound
Elimination Tool:

A torold is?  l• A circular ring shape of a coil. II- A solenoid bent In shape of a circle. a) I only b) II only

Which of the following is incorrect?

During radioactive decay of a nucleus zXA, β emission takes place along with the daughter nucleus. Because of this beta particle emission, the mass number (A) of the parent nucleus:

NTS 2018
Physics
Nuclear Physics
Elimination Tool:

Unit of Electric Intensity is

What should the distance of an object from a convex lens of focal length f=10 cm in order to produce an erect image twice as large as the object?

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

In a ripple tank, 40 waves pass through a certain point in one second. If the wavelength of the waves is 5 cm, then find the speed of the wave:

NUMS 2020
Physics
Wave Motion and Sound
Elimination Tool:

Two vectors are of magnitude 50 and 31,the resultant might be?

The light exhibits the phenomena of constructive interference under the situation when it is ______ and ______.

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

The ratio of angular speed of moon around the Earth to its angular speed about its own axis is:

NUMS Mock 3
Physics
Circular Motion and Momentum

In an astronomical telescope, the lens called eyepiece forms an image of a distant object that is:

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

Which of the following phenomenon proves that light waves are transverse waves?

NUMS Mock 1
Physics
Electromagnetic Waves

The velocity of a particle is related to time according to the equation

V= ct3. The dimensions of constant are _______.

NTS 2019
Physics
Measurements
Elimination Tool:

1. Which one type of fibre is more suitable for transmission of signals in which white light is used?Which one type of fibre is more suitable for transmission of signals in which white light is used?

Third law of Newton is also called:

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

How can we define linear magnification produced by a lens?

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

The oscillating object overshoots the rest position due to:

The unit of impulse is same as of

Maximum acceleration with zero velocity is possible only for:

NUMS 2018
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

Value of  ∊ _s is:

A sound wave with a frequency of 343Hz travels through the air. What is its wavelength? (speed of sound through air=343 m/s)

NUMS Mock 3
Physics
Wave Motion and Sound

If the body is rotating with uniform angular velocity, then its torque is:

NUMS Mock 2
Physics
Circular Motion and Momentum

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

Dimension of Torque Is?

Orange light in a vacuum has a wavelength of 600 nm. What is the frequency of this light?

ETEA 2018
Physics
Electromagnetic Waves
Elimination Tool:

A fixed mass of gas in a thermally insulated container is compressed. After compression, the temperature of the gas will have:

NTS 2017
Physics
Heat and Thermodynamics
Elimination Tool:

Magnetic flux is maximum when angle between magnetic field and vector area is:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

In single slit diffraction, when wavelength lameda increases:

PMC Practice 20
Physics
Electromagnetic Waves
Elimination Tool:

If Ns/Np is the turn ratio, then for step up transformer

Which of the following is not a type of rectifier?

PMC Practice 12
Physics
Electronics
Elimination Tool:

Three books A, 8, C are place on each other with A on top, B in mid and C at bottom. If weight of A is 2N, B is 5N and that of C is 4N, what is the total force being exerted on book B?

A 3 kg stone falls from a 20m high platform. Find its falling speed at 10 m height.

NUMS Mock 1
Physics
Forces and Motion

The series limit for the Balmer series of hydrogen spectrum occurs at 3664 A. Calculate Ionization energy of hydrogen atom.

NTS 2013
Chemistry
Dawn of Modern Physics
Elimination Tool:

Two forces equal in magnitude but opposite In direction and not acting along the same line constitute a couple. The movement of this couple will be:

NTS 2018
Physics
Forces and Motion
Elimination Tool:

As a result of the natural process the entropy

Simple Harmonic Motion of a body is described by which statements mentioned below:

K : K.E is maximum when displacement x = 0

L : P.E is maximum when x = 0

M : P.E is maximum when x = ± x0

UHS 2018
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

Identify the factor on which mutual inductance does not depend:

PMC Practice 3
Physics
Alternating Current
Elimination Tool:

The resultant of two forces has magnitude of 20N . if one of the forces is of magnitude 20√3 N and makes an angle of 30o with the resultant then, the other forces must be of magnitude:

NTS 2015 DUHS and JSMU
Physics
Scalars and Vectors
Elimination Tool:

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

ETEA 2019
Physics
Measurements
Elimination Tool:

A cathode ray oscilloscope is displaying an AC signal. If one wave is completed in 2 cm along X- axis and time-base setting is 10 ms/cm, then frequency of AC signal will be:

NUMS Mock 4
Physics
Wave Motion and Sound

In order to produce pair production the minimum energy of photon required is:

NTS 2019
Physics
Dawn of Modern Physics
Elimination Tool:

Which one of the following properties is not exhibited by the longitudinal waves?

NUMS Mock 4
Physics
Wave Motion and Sound

Electrons are emitted in the production of X rays by:

NUMS Mock 1
Physics
Atomic Spectra

Extraterrestial waves are also called:

PMC 2021 Tested
Physics
Electromagnetic Waves
Elimination Tool:

Which of the following particles has greater wavelengths having the same velocity?

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

A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1kV, its kinetic energy will be:

NUMS 2016
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Which of the following is CORRECT for photons?

PMC 2021 Tested
Physics
Electromagnetic Waves
Elimination Tool:

An object whose mass is 100 g starts from rest and moves with constant acceleration of 20 cm / s2. At the end of 8s its momentum is ________ in g cm / s.

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

The ripple factor of half-wave rectifier is?

PMC Practice 14
Physics
Electronics
Elimination Tool:

Which measure Is nearest to your height?

A body moving with velocity V can be stopped by a force F in direction of it. The same body moving with velocity 5 V can be stopped by a force 5F in distance equal to:

NUMS 2017
Physics
Forces and Motion
Elimination Tool:

In a double slit experiment, two slits are 0.2 mm apart with a screen at a distance of 1m. The third bright fringe is found to be displaced at a distance of 7.5 mm from the central fringe. What is the value of the wavelength?

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

The motion of particle executing SUM is given by x = 0.01 sin 100 π t, where x is in meter and time is in second. The time period is

If voltage is 100V current is 10A and R Is 5ohm then internal resistance?

In the breakdown region zener behaves like a

PMC Sample 2
Physics
Electronics
Elimination Tool:

Polarization explains light is ———

PMC Practice 8
Physics
Electromagnetic Waves
Elimination Tool:

Gamma rays are emitted from nuclei of radioactive atoms. They are nothing but:

NTS 2016 DUHS & JSMU
Physics
Nuclear Physics
Elimination Tool:

In full wave rectifier with input frequency 50 Hz, the ripple in the output is mainly of frequency?

PMC Practice 10
Physics
Electronics
Elimination Tool:

If length of the pendulum is halved time ‘period will be?

Compression of gas under constant temperature is process:

In E = aT4  E stands for??

Ratio of Electrical Constant to Gravitational constant is approximately:

A body of mass of 2kg absorbed 10 J of radioactive radiations. The absorbed dose of radiation in rad is:

NUMS 2015
Physics
Nuclear Physics
Elimination Tool:

A 100 watt bulb is operated by 240 volts, the current through the bulb will be:

NTS 2012
Physics
Current Electricity
Elimination Tool:

The direct exposure of sun light where ozone layer is depleted will cause:

2022 PMC Test 1
Physics
Electromagnetic Waves
Elimination Tool:

Two sample of gases ‘1’ and ‘2’ are taken at same temperature and pressure
but the ratio of number of their volume is V1
:V2 = 2:3. What is the ratio of the
number of moles of the gas sample?

UHS 2015
Physics
Fluid Dynamics
Elimination Tool:

The displacement has __________.

PMC Practice 2
Physics
Scalars and Vectors
Elimination Tool:

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

NUMS Mock 3
Physics
Oscillations and Simple Harmonic Motion

Two spherical balls of 2.0 kg and 3.0 kg masses are moving towards each other with velocities of 6 m/s and 4 m/s respectively. What must be the velocity of the smaller ball after the collision, if the velocity of the bigger ball is 3 m/s?

NTS 2015 DUHS and JSMU
Physics
Circular Motion and Momentum
Elimination Tool:

Work done by retarding force is:

Which of the following has greater wavelength than red light?

The torque will be greater if:

NTS 2011
Physics
Circular Motion and Momentum
Elimination Tool:

mho is the unit of 7

The light we see is:

PMC 2021 Tested
Physics
Electromagnetic Waves
Elimination Tool:

An electron enters in a magnetic field at an angle less than 90 degrees with magnetic field. Which of the following path is followed by an electron?

NUMS Mock 3
Physics
Magnetism and Electromagnetic Induction

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:

Unit of CV^2 is equivalent to that of?

A simple pendulum completes one oscillation in 4 seconds. Calculate its length when g= 9.8 m/s2, as the time period of a simple pendulum is given by T = 2 π √(l/g)

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

Identify the postulate(s) which help to formulate a mathematical model of gases.

I. A finite volume of gas consists of very large number of molecules

II. The size of the molecules is much smaller than the separation between molecules

III. Molecules do not exert force on each other except during a collision.

NUMS Mock 2
Physics
Heat and Thermodynamics

A rescue helicopter drops a package of emergency ration to a stranded party on the ground. If the helicopter is traveling at 40 m/s at a height of 100 m above the ground, where does the package strike the ground relative to the point at which it was released? (g= 9.8 m/s2)

NTS 2010
Physics
Motion in Two Dimensions
Elimination Tool: