If stress is doubled, then volume becomes

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

NUMS Mock 2
Physics
Oscillations and Simple Harmonic Motion

Which device is used to measure the potential difference between two points of a conductor in the laboratory?

NUMS 2020
Physics
Current Electricity
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?

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:

When a body is falling under the action of gravity the direction of acceleration is:

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

2022 PMC Test 1
Physics
Electromagnetic Waves
Elimination Tool:

The bicycle pump works on the basis of:

NUMS Mock 2
Physics
Heat and Thermodynamics

if particles are displaced In direction perpendicular to waves then waves are? a)

There is no noticeable boundary between core and cladding.

Electric intensity between two plates of a capacitor equals:

In heavy nuclei the number of neutrons is than protons

If half-life of an element Is 4 minutes, then 3/4′ of It Is decayed in:

A ball is thrown from some height; it strikes the ground and bounces back to the same height. This scenario represents which situation:

The energy supplied by the cell to the charge carriers is derived from the conversion of:

NUMS Mock 1
Physics
Current Electricity

The efficiency of the Carnot engine working between temperatures 177°C and 77°C will be:

NTS 2018
Physics
Heat and Thermodynamics
Elimination Tool:

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:

A jeep travelling at a constant speed of 108 km/hr rounds a curve of radius 100 m. Find its acceleration.

NTS 2015 SMBBMC
Physics
Circular Motion and Momentum
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:

Work will be maximum when the angle between force and displacement is:

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

NTS 2019
Physics
Dawn of Modern Physics
Elimination Tool:

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

NUMS Mock 3
Physics
Wave Motion and Sound

Dimensions of U are

A mixture of electric fields and magnetic fields is?

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

NUMS 2016
Physics
Wave Motion and Sound
Elimination Tool:

If a half-wave rectifier is used to convert 50 Hz AC into DC, then the number of pulses present in the rectifier voltage is:

PMC Practice 2
Physics
Alternating Current
Elimination Tool:

If the amplitude is 200, the intensity is 300 when the amplitude is increased to 800 then what will be the intensity?

NUMS Mock 3
Physics
Fluid Dynamics

One of the following is an Ohmic device:

PMC 2020
Physics
Current Electricity
Elimination Tool:

A wire is stretched by a force which causes an extension. The energy is stored in it only when:

UHS 2011
Physics
Physics of Solids
Elimination Tool:

The shortest wavelength photon emitted in Balmer series is:

NTS 2012
Physics
Atomic Spectra
Elimination Tool:

Two conducting objects X and Y having a charge Q on them exert force F on each other. Now third conductor having a charge -Q is touched to X and is removed, the new force between X and Y will be:

Why is the total mass of all individual protons and neutrons in a nucleus greater than the mass of the nucleus which they constitute?

NUMS Mock 2
Physics
Nuclear Physics

The deviation of I-V graph from straight line is due to:

NUMS 2016
Physics
Current Electricity
Elimination Tool:

Half wave voltage multipliers can provide what degree of voltage multiplication?

PMC Practice 4
Physics
Alternating Current
Elimination Tool:

A sphere of charge +Q is fixed in a position. A smaller sphere of +q is placed near the larger sphere and released from the rest. The small sphere will move away from the large sphere with?

NTS 2014
Physics
Electrostatics
Elimination Tool:

Two strings A and B of a sitar produces 6 beats per second. When the tension in string B is slightly reduced, beat frequency is reduced by 3 beats per second. If the frequency of string A is 324 Hz. then original frequency of string B was:

NUMS 2019 Cancelled
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

A pipe open at both ends has a length of 5m. The second harmonic frequency is _____. Velocity of sound in air = 340 m/s.

NUMS Mock 4
Physics
Wave Motion and Sound

Light rays coming from the tube light are

For one mole of gas, the relation for specific heat capacity at constant pressure ‘Cp’ and at constant volume ‘Cv’ is ________.

NUMS 2019 Reconduct
Physics
Heat and Thermodynamics
Elimination Tool:

mho is the unit of 7

Force is a derived quantity, its derived unit can be expressed in terms of the base units as:

UHS 2018
Physics
Measurements
Elimination Tool:

In a circuit, there is a current of 5 amp which is changed such that the current falls to zero in 0.1 sec. If an average e.m.f. of 200 volts is induced, the self-inductance of the circuit will be:

NTS 2012
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Molecules of a gas at constant pressure for a fixed amount of gas have average kinetic energy X. Increasing temperature from 27˚C to 327˚C, the average K.E. of the molecules will become:

NUMS Mock 4
Physics
Heat and Thermodynamics

An object with constant mass rests on a horizontal surface whose coefficient of friction is 0.2. If a horizontal force F is applied to the object, what will be the effect(s) on the object?

I. It may move with constant speed in the direction of F once it has been set in motion.

II. It may remain at rest.

III. It may accelerate.

IV. It may move with constant speed in a direction opposite

NTS 2017
Physics
Forces and Motion
Elimination Tool:

A ball is released from a height h, above a table. Given that air resistance is negligible and 50% of its kinetic energy is converted to other forms of energy at each bounce, what will be the height reached after the second bounce?

Unit of power of a lens is

To determine Young’s modulus of a material of a given wire of length ? we use:

ETEA 2018
Physics
Physics of Solids
Elimination Tool:

If Cv= 5/2 R , Cpwill be:

NUMS Mock 3
Physics
Heat and Thermodynamics

Which of the following statements is not consistent with Bohr’s set of postulates regarding the hydrogen atom model with regard to the emission and absorption of light?

NTS 2013
Physics
Atomic Spectra
Elimination Tool:

Which statement describes the electric potential difference between two points in the electric field of charge Q?

NTS 2019
Physics
Electrostatics
Elimination Tool:

A body of mass m = 3.513 kg is moving along the x axis with a speed of 5.00 ms^-1 of  the magnitude of Its momentum Is recorded as

The dimensional formula for change in momentum is same as that for:

ETEA 2018
Physics
Measurements
Elimination Tool:

A ball falls vertically and bounces on the ground. The following statements are about the forces acting while the ball is in contact with the ground. Which statement is correct?

NTS 2017
Physics
Forces and Motion
Elimination Tool:

A 4.0 m long wire is subjected to stretching force and its length increases by 40 cm. The percent elongation which the wire undergoes is:

UHS 2013
Physics
Physics of Solids
Elimination Tool:

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 Sample 1
Physics
Wave Motion and Sound
Elimination Tool:

The path difference for the constructive interference is:

NUMS 2018
Physics
Wave Motion and Sound
Elimination Tool:

The process of natural decay of some heavy nuclides is because of the phenomenon:

NTS 2018
Physics
Nuclear Physics
Elimination Tool:

A steady current of 5 A is drawn from an electric source at a voltage of 100 V. The power consumed (in Watts) is:

NUMS 2018
Physics
Current Electricity
Elimination Tool:

A travelling wave, in which the particles of the distributed medium, move parallel to the direction of propagation of the wave is called:

NTS 2019
Physics
Wave Motion and Sound
Elimination Tool:

If an object sinks in the water, then

A point where the incident parallel rays of light converge or appear to diverge after passing through a lens
is called

A tuning fork A produces 4 beats with another tuning fork B. if the frequency of tuning fork B is 320 Hz, then the frequency of tuning fork A is:

PMC Practice 21
Physics
Electromagnetic Waves
Elimination Tool:

In which of the following the pn Junction is used?

In hydrogen spectrum If nj = 6, then the spectral lines lie In:

The electromagnetic radiation which moves with high frequency will have _______ wavelength:

2022 PMC Test 3
Physics
Electromagnetic Waves
Elimination Tool:

The difference between soft and hard X-rays is of:

NUMS Mock 1
Physics
Atomic Structure

Value of solar constant on the surface of Earth is:

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

Electric potential is a quantity.

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:

An electromagnetic wave travels in a straight line through a vacuum. The wave has a frequency of 6.0 THz. What is the number of wavelengths in a distance of 1.0 m along the wave?

ETEA 2018
Physics
Electromagnetic Waves
Elimination Tool:

Two glass prisms Pl and P2 are to be combined together to produce dispersion without deviation. The angle of the prisms P1 and P2 are selected as 40 and 30 respectively. If the refractive index of prism Pl is 1.54, then that of P2 will be:

NUMS 2014
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

A body having translatory motion possesses _____ and _____. In the same way a body having rotatory motion possesses _______ and _______.

NTS 2015 SMBBMC
Physics
Circular Motion and Momentum
Elimination Tool:

What is farad of electricity?

If a 2 µF capacitor is connected, by closing a switch, to a supply of 100 volts through  1M ohm  series resistance. What will be the time constant?

The density of blood is:

UHS 2011
Physics
Fluid Dynamics
Elimination Tool:

Number of Significant figures in 0.001634 Is:

Which gas is not used in GM counter?

The rate at which work is being done is called:

UHS 2018
Physics
Work, Power and Energy
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:

If x and y are the input of the GATE, and z is the output, the following table represents:

Two bodies ‘x’ and ‘Y’ are attached to the ends of a string which passes over a pulley so that the two bodies hang vertically. If the mass of the body ‘x’ is 5 kg and that of body ‘Y’ is 4.8 kg. Find the acceleration?(g = 9.8 m/s^2)

NUMS Mock 1
Physics
Forces and Motion

The number of LED segments used in a calculator display:

NUMS 2015
Physics
Dawn of Modern Physics
Elimination Tool:

Which of following has greatest energy

The time period of a wave is 1/4 sec. How long does it take 20 complete waves to pass a point?

PMC Sample 1
Physics
Wave Motion and Sound
Elimination Tool:

in an organ pipe if one side is closed, then it is proved that harmonics released will be

Two springs fixed at one end are stretched by 5 cm and 10 cm respectively when masses 0.5 kg and 1 kg are suspended at their lower ends. When displaced slightly from their mean positions and released, they will oscillate with time periods in the ratio:

NTS 2017
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

A moon of mass ‘m’ orbits a planet of mass 100 m. Let the strength of the gravitational force exerted by the planet on the moon be denoted by F1 , and let the strength of the gravitational force exerted by the moon on the planet be F2 . Which of the following is true?

NTS 2014
Physics
Gravitation
Elimination Tool:

Radiation cause damage in a)

A particle with Initial velocity 40 m/s moving with a constant acceleration 10 m/s  Is distance covered In 5 second will be

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

NUMS Mock 1
Physics
Electromagnetic Waves

In case of half wave rectification the resistance of diode during negative half of A.C is:

UHS 2018
Physics
Alternating Current
Elimination Tool:

When a body moves in the direction of gravitational force i.e. towards the earth, the work is done by the force of gravity on the body and is ______, whereas when the body moves against the direction of gravitational force, the corresponding work done is ______.

NTS 2014
Physics
Gravitation
Elimination Tool:

Calculate the energy of a photon of wavelength 6600 Angstroms:

PMC Practice 5
Physics
Dawn of Modern Physics
Elimination Tool: