If a single convex lens is placed close to the eye, it can be used as a

speed of sound is greatest in

Resistivity of Hg is ohmmeter

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 car starts from rest and moves with a constant acceleration. During the 5th second of its motion, it covers a distance of 36 meters. What is the acceleration of the car?

NTS 2011
Physics
Motion in Two Dimensions
Elimination Tool:

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:

A lithium nucleus contains 3 protons and 4 neutrons. What is its atomic number?

NUMS 2017
Physics
Nuclear Physics
Elimination Tool:

Black body emits which of the following radiations:

In rotational motion, angular momentum plays a role which is analogous to that played by _____ in linear motion.

NUMS Mock 3
Physics
Circular Motion and Momentum

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:

In which of the following scenarios will the K.E be zero?

A material that does NOT become radioactive after absorbing neutrons is called.

NTS 2019
Physics
Nuclear Physics
Elimination Tool:

The area under force-displacement graph gives us:

NUMS 2020
Physics
Forces and Motion
Elimination Tool:

If frequency of incident light is increased beyond threshold frequency, keeping light intensity constant, then:

NUMS Mock 2
Physics
Dawn of Modern Physics

The film of oil on water shows colour pattern when illuminated by white light due to:

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

A ballistic missile is

Change in entropy does not depend on:

NUMS Mock 3
Physics
Heat and Thermodynamics

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

The ionization energy of hydrogen is:

The food we eat in one day has about the same energy as:

NUMS 2020
Physics
Work, Power and Energy
Elimination Tool:

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

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 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:

Charge on an up-quark is:

Third law of Newton is also called:

NUMS 2016
Physics
Forces and Motion
Elimination Tool:

For adiabatic process, the first law of thermodynamics is:

NUMS 2016
Physics
Heat and Thermodynamics
Elimination Tool:

What is the kinetic energy at the extreme position during SHM?

F = I L B, What Is relation between I and L

Law of Conservation of Momentum states that total linear momentum of system remains constant if:

NUMS Mock 1
Physics
Forces and Motion

In projectile motion, which velocity component remains same throughout the flight?

To convert the Si crystal into a P. type semi-conductor, which group element be Doped?

NUMS 2016
Physics
Physics of Solids
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?

When a conductor of a cross-sectional area 5×10-6 m2 carries a current of 6 A, the drift velocity of the conduction electrons is 1.2-4 x 10-1 ms1-. What is the number density (number per unit volume) of the conduction electrons?

NTS 2010
Physics
Current Electricity
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:

Resistivity of Silver is ohmmeter

A 1.75 m tall weight-lifter raises a weight of mass 50 kg to a height of 0.5 m above its head. How much work is being done by it? (g = 10 ms-2)

PMC 2020
Physics
Work, Power and Energy
Elimination Tool:

Vector is quantity that ——

PMC Practice 4
Physics
Scalars and Vectors
Elimination Tool:

A car 500 kg is travelling at a constant speed of 9 m/s round a curve of 100m. What is the centripetal force?

NTS 2019
Physics
Circular Motion and Momentum
Elimination Tool:

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

ETEA 2018
Physics
Physics of Solids
Elimination Tool:

for normal adjustment, length of astronomical telescope is

Water is flowing in a streamline motion through a horizontal tube. The pressure at a point in the tube is P where the velocity of now is v. At another point, where the pressure is P/2, the velocity of flow is: (density of water=ρ)

NUMS 2014
Physics
Fluid Dynamics
Elimination Tool:

Which of the following is a unit of Work?

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 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:

Which of the following option(s) represent a vector quantity?

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:

What is the device which is used to measure magnetic field

What is the range of typical band gap in conductors

PMC Sample 3
Physics
Alternating Current
Elimination Tool:

During the production of x-rays, the cathode and anode are enclosed inside an evacuated glass chamber and a high DC voltage of the order of:

NUMS 2020
Physics
Atomic Spectra
Elimination Tool:

The target in the X ray unit is given a:

NUMS 2018
Physics
Atomic Spectra
Elimination Tool:

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

ETEA 2018
Physics
Measurements
Elimination Tool:

Ball thrown freely from a tower reaches ground in 4s. The height of tower Is about

A gas is enclosed in a container fitted with a piston of cross-sectional area of 0.10 m2. The pressure of the gas is maintained at 8000 N/m2. When heat is slowly transferred, the piston is pushed up through a distance of 4.0 cm. If 42 J heat is transferred to the system during the expansion, what is the change in the internal energy of the system?

NTS 2015 DUHS and JSMU
Physics
Work, Power and Energy
Elimination Tool:

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:

A neutron travels a distance of 12 m in a time interval of 3.6 x 10 – 4s. Assuming its speed was constant, find its kinetic energy. (take 1.7 x 10 – 27 kg is the mass of neutron)

NTS 2015 SMBBMC
Physics
Work, Power and Energy
Elimination Tool:

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?

In a certain circuit, a transistor has a collector current of 10mA and a base current of 40μA. What is the current gain of the transistor?

NTS 2015 DUHS and JSMU
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Mass of a person is 50 kg. The apparent weight of the person in elevator is double of his real weight. Find the acceleration of the elevator. Consider g = 10 m/s2

A particle of mass 5 mg moves with a speed of 8 m/s. Calculate its de Broglie wavelength (h = 6.63 x 10-34 Js)

NTS 2015 DUHS and JSMU
Physics
Atomic Spectra
Elimination Tool:

Angular velocity is measured in

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:

An electron is situated midway between two parallel plates 0.5 cm apart. One of the plates is maintained at a potential of 60 volts above the other. The force on the electron is (e = -1.6×10-19)

NTS 2011
Physics
Electrostatics
Elimination Tool:

A circuit in which there is a current of 10 amperes is changed so that the current falls to zero in 0.5 seconds. If an average e.m.f. of 400 volts is induced, what is the self-inductance of the circuit?

NTS 2015 DUHS and JSMU
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

Extraterrestial waves are also called:

PMC 2021 Tested
Physics
Electromagnetic Waves
Elimination Tool:

mho is the unit of 7

Consider the spectral line resulting from the transition from n=2 to n=1, in atoms and ions given below. The shortest wavelength is produced by:

PMC Sample 3
Physics
Atomic Spectra
Elimination Tool:

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

NTS 2016 DUHS & JSMU
Physics
Nuclear Physics
Elimination Tool:

Q.91 The source of gamma radiation is

An alternating voltage source is connected to a resistor R, and a capacitor C, then which of the following statements about phase angle between voltage V and current I is correct?

NUMS 2019 Cancelled
Physics
Alternating Current
Elimination Tool:

What is the speed of 2.0 kg metallic bob at the mean position of a simple pendulum, when released from its extreme position 0.5m high? (g = 10 ms-2)

PMC 2020
Physics
Work, Power and Energy
Elimination Tool:

Which of the following quantity has the dimension MLT^-1

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:

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

NUMS Mock 3
Physics
Oscillations and Simple Harmonic Motion

A stone of mass 2.0 kg is dropped from a rest position 5.0 m above the ground. What is its velocity at a height of 3.0 m above the ground?

NUMS Mock 1
Physics
Forces and Motion

When a conductor moves In magnetic field the Induced emf Is

Mutual inductance has a practical role in performance of:

NUMS Mock 1
Physics
Magnetism and Electromagnetic Induction

If ‘0.8 i + 0.5 j + ck’ represents a unit vector, the value of ‘c’ is:

NUMS 2019 Cancelled
Physics
Scalars and Vectors
Elimination Tool:

If length of simple pendulum is increased four times what will be effect on its frequency?

A vector having magnitude equal to one is called

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 Mock 4
Physics
Forces and Motion

Kirchhoff’s first law is manifestation of:

NUMS Mock 3
Physics
Current Electricity

The earth rotates on its axis once a day. Suppose, by some process the earth contracts so that it’s radius is only half as large as at present, then how long the earth will take to complete it’s rotation?

PMC 2020
Physics
Circular Motion and Momentum
Elimination Tool:

If a convex lens of large aperture fails to converge the light rays incident on it to a single point, it is said to
suffer form

Photocell is similar to:

PMC Sample 2
Physics
Dawn of Modern Physics
Elimination Tool:

The velocity of an object increases from 0 to 10 m/s in 2 seconds. The distance covered by the object is _________.

NUMS 2019 Reconduct
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:

The total outward flux over any closed hypothetical surface called _____ is equal to the total charge enclosed divided by ε irrespective of how the charge is distributed.

NTS 2015 DUHS and JSMU
Physics
Electrostatics
Elimination Tool:

The branch of Physics in which we study the properties of light and its applications on optical instruments is called?

The force between two point charges separated by a certain distance is F. If each charge is doubled and the distance between them is also doubled, then the force would be:

PMC Sample 1
Physics
Electrostatics
Elimination Tool:

A galvanometer has a resistance of 20 ohms and a full-scale deflection when a current of 0.001 ampere flows in it. What is the value of the series resistance to convert it into a voltmeter of range 10 volts?

NTS 2014
Physics
Current Electricity
Elimination Tool:

A microscope has an objective of 10 mm focal length and eyepiece of 25 mm focal length. What is the distance between the lenses if the object is in sharp focus when it is 10.5 mm from the objective?

NTS 2015 DUHS and JSMU
Physics
Optics, Nature of Light and Optical Instruments
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 Mock 2
Physics
Motion in Two Dimensions