A spring in SHM oscillates between -A and A with time period T. If the spring starts from mean position and moves towards A, at what time will it be at a distance of A/2 from the mean position?

A particle is projected at an angle of 45 degrees with a velocity of 9.8 m/s. The horizontal range will be:

(g=9.8 m/s2)

NTS 2012
Physics
Motion in Two Dimensions
Elimination Tool:

A camera of 6-cm focal length is used to photograph a distant scene. The distance from the lens to the image is approximately:

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

Displacement of sun with respect to earth is

PMC Sample 2
Physics
Scalars and Vectors
Elimination Tool:

The temperature of a body at 100 °C is increased by Δ? as measured on the Celsius scale. How is this temperature change expressed on the Kelvin scale?

NTS 2013
Physics
Heat and Thermodynamics
Elimination Tool:

In electronic circuits, a PN junction diode is used to convert alternating current into direct current. This process is called:

NTS 2018
Physics
Alternating Current
Elimination Tool:

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

NUMS Mock 1
Physics
Electromagnetic Waves

The beat frequency is given by:

NUMS Mock 1
Physics
Wave Motion and Sound

Incident rays of light parallel to the principal axis of a convex lens, after refraction by the lens, will:

NTS 2017
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

Red light is used in photographic dark room because of:

NUMS Mock 4
Physics
Optics, Nature of Light and Optical Instruments

A car starts from rest and moves with constant acceleration. During the 4th second of its motion, it covers a distance of 21 meters. The acceleration of the car is _____ m.

NTS 2019
Physics
Motion in Two Dimensions
Elimination Tool:

Michelson measured the length of a standard meter in terms of the wavelength of:

PMC Practice 2
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

Stokes’ Law for steady motion in a fluid of infinite extent is given by:

UHS 2012
Physics
Fluid Dynamics
Elimination Tool:

The least distance of distinct vision for a normal eye is

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

NUMS 2016
Physics
Electrostatics
Elimination Tool:

Spectral lines is like a __________ of absorbed or emission energy in a spectrum.

PMC Sample 3
Physics
Atomic Spectra
Elimination Tool:

When describing the isotopes of the same element, the most accurate statement is that they have:

NTS 2017
Physics
Atomic Spectra
Elimination Tool:

If the waves interfere constructively, the amplitude of the resulting wave would be:

NUMS 2018
Physics
Wave Motion and Sound
Elimination Tool:

Majority charge carriers in P-type semiconductor are

PMC Sample 2
Physics
Electronics
Elimination Tool:

The bicycle pump works on the basis of:

NUMS 2020
Physics
Heat and Thermodynamics
Elimination Tool:

Photoelectric effect is not produced by:

PMC 2021 Tested
Physics
Dawn of Modern Physics
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:

A mass of 20 kg is lifted from the floor to a height of 2m in 4.9 sec. Calculate the power in Watts.

NUMS Mock 1
Physics
Work, Power and Energy

Zeros are always considered significant when they are

mho is the unit of 7

What is the unit of angular momentum

Unit of induced emf is

The basic source of geothermal energy is

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

UHS 2019
Physics
Dawn of Modern Physics
Elimination Tool:

X-rays have frequency greater than

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 mass has constant acceleration, what is true about the force applied on it?

NUMS Mock 1
Physics
Forces and Motion

A body of mass m moving with velocity v has a kinetic energy K. If its velocity is increased by 25%, what will be the work done in terms of K.E?

If a wire having current 10A has a 3T magnetic field, what will be the magnetic field at a point from the wire at double the distance?

NUMS 2016
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

The maximum efficiency of a half-wave rectifier is:

PMC Practice 3
Physics
Alternating Current
Elimination Tool:

Which of the following has greater wavelength than red light?

An object is dropped from the top of the building. If it takes 10 seconds to hit the ground, what is the height of the building?

NTS 2015 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

The sum of all forms of molecular energies in a thermodynamic system is known as:

NTS 2017
Physics
Heat and Thermodynamics
Elimination Tool:

When light enters from air to glass remains constant?

The range of wavelengths for visible light is between _______.

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

If during circular motion, tangential velocity of a body becomes double, then centripetal force becomes:

PMC 2020
Physics
Circular Motion and Momentum
Elimination Tool:

When earthquake occurs. What happens to the entropy of Earth?

When photons are incident on a metal, electrons are emitted. The process is called:

NTS 2016 SMBBMC
Physics
Dawn of Modern Physics
Elimination Tool:

In a pure resistive circuit current and voltage are

Which photon carries the most energy?

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

Which of the following is NOT a unit of energy?

PMC 2021 Tested
Physics
Work, Power & Energy
Measurements
Elimination Tool:

How many types of modulations are possible with sinusoidal carrier?

NTS 2016 SMBBMC
Physics
Wave Motion and Sound
Elimination Tool:

Power factor in an AC circuit Is?

A student is performing a lab experiment on simple harmonic motion. He has two different springs (with force constants k1 and k2) and two different blocks (of masses m1 and m2). If k1 =2k2, and m1 = 2m2 , which of the following combinations would give the student the spring-block simple harmonic oscillator with the shortest period?

NTS 2014
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

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

NTS 2014
Physics
Current Electricity
Elimination Tool:

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

NUMS Mock 4
Physics
Wave Motion and Sound

The target in the X ray unit is given a:

NUMS 2018
Physics
Atomic Spectra
Elimination Tool:

22320 cal heat is supplied to 100g of ice at zero degree centigrade. If the latent heat of fusion of ice is 80 cal /g and latent heat of vaporization of water is 540 cal/g the final amount of water thus obtained and its temperature respectively are:

NUMS 2014
Physics
Heat and Thermodynamics
Elimination Tool:

A bulb having a resistance of 150 Ω is connected to a 225 volt source, the current in the bulb will be:

NTS 2012
Physics
Current Electricity
Elimination Tool:

A body is hanging from a rigid support by an extensible string of length L. It is struck inelastically by an identical body of mass m with horizontal velocity v =√2gl , the tension in the string increases just after striking by:

NTS 2019
Physics
Circular Motion and Momentum
Elimination Tool:

______ is defined as the sensation that sound produces in the ear of a listener and is clearly related to the frequency of sound. Frequency and ______ are both measured in Hertz (Hz). Thus greater the frequency the greater the _____ and lower the frequency lower the _______.

NTS 2017
Physics
Wave Motion and Sound
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:

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?

NUMS Mock 4
Physics
Work, Power and Energy

Unit of Magnetic Flux is

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:

The phenomenon in which certain elements emit invisible radiations is called:

NTS 2018
Chemistry
Atomic Spectra
Elimination Tool:

When a force acts at right angles to the displacement (θ=90°) the work done is zero i.e. the force does not produce work. Identify the example/s from the following when work is zero.

I. It is considered ‘hard work’ to hold a heavy stone stationary at stretched hand

II. A person walks along a level surface while carrying a box

III. when a body moves in circular path

NTS 2014
Physics
Forces and Motion
Elimination Tool:

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

PMC 2020
Physics
Current Electricity
Elimination Tool:

Which of the following changes, when particle Is moving with uniform velocity?

Ratio of Nano to Atto Is:

A shot leaves a gun at the rate of 160 m/s. Calculate the greatest distance to which it could be projected. (Take g = 10 m/s2)

NTS 2013
Physics
Motion in Two Dimensions
Elimination Tool:

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:

The half life of C14 is about:

NUMS Mock 4
Physics
Nuclear Physics

If a 2-ampere current is drawn from the battery in 10 minutes, how much charge will flow through the circuit in this time?

NUMS 2015
Physics
Current Electricity
Elimination Tool:

22320 cal heat is supplied to 100g of ice at zero degree centigrade. If the latent heat of fusion of ice is 80 cal /g and latent heat of vaporization of water is 540 cal/g the final amount of water thus obtained and its temperature respectively are:

NUMS 2019 Cancelled
Physics
Heat and Thermodynamics
Elimination Tool:

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

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

The phase angle between two points in a medium is 3π/4. If the distance between these points is 20 cm, then the wavelength of the wave is?

NUMS Mock 3
Physics
Wave Motion and Sound

A charge is situated in the center of cube. The electric flux through one of the faces of the cube is.

If y-component of a force acting In y direction is 6N the x-component will be

If the ionization energy of hydrogen atom is 13.6 eV, its ionization potential will be

PMC Sample 3
Physics
Atomic Spectra
Elimination Tool:

A 400 gram ball is tied to the end of a cord and whirled in à horizontal circle of radius 0.6 m. If the ball makes five complete revolutions in 2 s, what is the ball’s linear speed?

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

if v is the velocity of an object, then the following equation is always:

[1-v²/c²]^-0.25

A diode works in _______ bias for rectification.

PMC Practice 6
Physics
Alternating Current
Elimination Tool:

A neutron travels a distance of 24 m in a time interval of 3.6 x 10^-4 s. Assuming its speed was constant. Find its kinetic energy. Take 1.7 x 10^-27 kg as the mass of the neutron.

NTS 2016 SMBBMC
Physics
Work, Power and Energy
Elimination Tool:

Which of the following is an instrument for monitoring radiations:

NUMS 2016
Physics
Nuclear Physics
Elimination Tool:

If capacitor is connected with battery and is fully charged then

A value for the acceleration of free fall on earth is given as (10+-2) m s-2. Which statement is correct?

ETEA 2017
Physics
Measurements
Elimination Tool:

Nuclear fission reaction takes place In controlled conditions by the

Let L be the length and d be the diameter of the cross section of a wire. Wires of the same material with different L and d are subjected to the same tension along the length of the wire. In which of the following cases the extension of wire will be the maximum?

NUMS 2019 Cancelled
Physics
Physics of Solids
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:

What is the change in kinetic energy of a proton when it is accelerated through a potential difference of 2MV?

PMC Sample 1
Physics
Electrostatics
Elimination Tool:

Choose the correct arrangement of the various regions of the electromagnetic spectrum in terms of wave length.

ETEA 2017
Physics
Electromagnetic Waves
Elimination Tool:

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

An aeroplane is flying in a straight line at a constant altitude. If a wing gust strikes and raises the nose of the airplane, the nose will bob up and down until the plane eventually returns to its original position. These oscillations are:

NUMS 2015
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool: