If a rotating body is moving anti-clockwise, the direction of angular velocity is:

PMC Practice 1
Physics
Scalars and Vectors
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 2019 Reconduct
Physics
Wave Motion and Sound
Elimination Tool:

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:

A parallel plate capacitor has a capacitance C. If the distance between the plates and the plates both halves, the capacitance will be?

NUMS 2017
Physics
Electrostatics
Elimination Tool:

Unit of induced emf is

If each particle of fluid is passing through the same point, what would be the flow?

NUMS Mock 1
Physics
Fluid Dynamics

The ratio of mass of electron to neutron is:

PMC Practice 4
Physics
Atomic Spectra
Elimination Tool:

Magnetic force on a moving charge depends upon:

NTS 2016 SMBBMC
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

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:

The phenomenon by which light travels in an optical fibres is:

NUMS 2016
Physics
Optics, Nature of Light and Optical Instruments
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:

The maximum Compton shift Is at

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

ETEA 2017
Physics
Measurements
Elimination Tool:

The K.E. of a body of mass 2kg and momentum of 2N is:

PMC Sample 1
Physics
Work, Power and Energy
Elimination Tool:

The force constant k1 and k2 of two springs are in a ratio of 5 : 4. They are stretched by the same length, if the potential energy stored in one spring is 25 J then the potential energy stored in the second spring is:

PMC Sample 1
Physics
Work, Power and Energy
Elimination Tool:

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

NUMS 2015
Physics
Circular Motion and Momentum
Elimination Tool:

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:

The product of force and time is equal to:

NUMS 2020
Physics
Forces and Motion
Elimination Tool:

If a force of 1 N acts on a body through a distance of 1 m in the direction of force, how much
work is done?

Energy stored in capacitor is represented by.

Total energy of an electron in hydrogen atom when it Jumps to higher orbit from a lower orbit Is

The main difference between X rays and Y rays is:

PMC 2020
Physics
Optics, Nature of Light and Optical Instruments
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 Practice 3
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

Light can be polarized by:

reflection
double refraction
scattering of light
NTS 2017
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series is:

PMC Sample 2
Physics
Atomic Spectra
Elimination Tool:

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

Identify the dimensions of area, velocity and acceleration respectively: ( where L= Length, T=Time)

NTS 2015 SMBBMC
Physics
Measurements
Elimination Tool:

If a car is moving with constant non-zero velocity, then its displacement time graph will be:

The total energy of a block, executing simple harmonic motion is:

NUMS Mock 1
Physics
Oscillations and Simple Harmonic Motion

A parallel plate capacitor has a capacitance C. If the distance between the two plates is halved, the capacitance will be?

NUMS Mock 3
Physics
Electrostatics

Ratio of Electrical Constant to Gravitational constant is approximately:

The power dissipated in a resistor is 12.8 watts when 4A current Is passed. Hw much power will be dissipated If 6A current Is passed through the same resistor?

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:

The centripetal acceleration is maximum when radius r is:

PMC Sample 1
Physics
Circular Motion and Momentum
Elimination Tool:

If N, m, V and c represent the number of molecules, mass of a molecule, volume of cubical container and speed of a molecule respectively then by using the method dimensions, check which of the following expressions represents the pressure (p) of a gas?

NUMS 2019 Cancelled
Physics
Heat and Thermodynamics
Elimination Tool:

The electrons in a conductor drift with a velocity of:

NUMS 2019 Reconduct
Physics
Current Electricity
Elimination Tool:

Which rays are used in LASER?

PMC 2021 Tested
Physics
Electromagnetic Waves
Wave Motion and Sound
Elimination Tool:

The entropy of the universe always:

NUMS 2016
Physics
Heat and Thermodynamics
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:

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:

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

When a certain metal surface is illuminated with light of frequency v. the stopping potential for photoelectric current is V0. When the same surface is illuminated by light of frequency V/2, the stopping potential is VO-/4. The threshold frequency for photoelectric emission is:

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

The base units of Young’s Modulus are:

NUMS 2019 Reconduct
Physics
Measurements
Elimination Tool:

In multimode step index fibre the refractive index of core and cladding is

White light does not focus to a single point after passing through a convex lens due to

The greek word “xeros” and “graphos” means:

PMC Sample 2
Physics
Electrostatics
Elimination Tool:

When frequency of applied periodic Force is equal to the natural frequency of harmonic oscillator then the _______ of oscillator _____.

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

Emission of an alpha particle from a radioactive element.

NUMS 2019 Reconduct
Physics
Nuclear Physics
Elimination Tool:

Light signals passes through multimode graded fibre due to

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:

Two positive point charges are placed 2m apart. The electric potential at midpoint due to these two charges will be _____:

NUMS 2020
Physics
Electrostatics
Elimination Tool:

When the speed of your car is halved, by what factor does its kinetic energy decreases?

PMC 2020
Physics
Work, Power and Energy
Elimination Tool:

Which of the following can cause least Ionization but has high Penetrating Power?

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

NTS 2014
Physics
Wave Motion and Sound
Elimination Tool:

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

NUMS 2018
Physics
Wave Motion and Sound
Elimination Tool:

A conductor of length L is moved across a magnetic field. Due to this activity, a potential difference appears across the ends of the conductor. This type of potential difference is termed as:

NTS 2018
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Which of the following field is dependent on the path?

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?

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

NUMS Mock 4
Physics
Wave Motion and Sound

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

Energy stored in capacitors connected in parallel

The open-circuit test in a transformer is used to measure?

PMC Practice 3
Physics
Electronics
Elimination Tool:

Alternating Current Generators use:

PMC Practice 5
Physics
Alternating Current
Elimination Tool:

In microwave ovens ____ is used to heat the food

PMC Practice 33
Physics
Electromagnetic Waves
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 2019 Reconduct
Physics
Wave Motion and Sound
Elimination Tool:

The binding per nucleon of deuteron (21H) and helium nucleus (42He) are 1.1 MeV and 7 MeV respectively. If two deuterons merge to form a single helium nucleus, the energy released will be:

NUMS 2019 Cancelled
Physics
Nuclear Physics
Elimination Tool:

An emf of 120 volts of negligible internal resistance is connected across a resistance of 1000 ohm. The current flowing through the circuit will be:

NUMS Mock 2
Physics
Current Electricity

A force F = 0.12 N is applied on a spring and the spring elongates by 3 cm. The specific constant of the spring is?

NUMS 2017
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

Dimensions of U are

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

The rectifier is a device which converts?

PMC Practice 3
Physics
Alternating Current
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 first excitation energy of H atom will be:

NUMS 2015
Physics
Atomic Spectra
Elimination Tool:

Value of acceleration due to gravity on mars?

A 70 kg sportsman runs up a long flight of stairs in 4 seconds. The vertical height of the stairs is 4.5 m. What will be his power output in watts?

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

Calculate the frequency if the number of revolutions is 300 and the paired poles are 50.

PMC Practice 6
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

Two positive point charges Q1 = 16 microCoulombs and Q2 = 4 micro Coulombs are seperated in a line by a distance of 3 meters. Find the spot on the line between the charges where the electric field is zero.

NUMS 2019 Reconduct
Physics
Electrostatics
Elimination Tool:

The dimensions of volume and acceleration (respectively) are:

NTS 2010
Physics
Measurements
Elimination Tool:

A disc, a hoop, and a sphere of the same mass and radius are rolled down from a frictionless, inclined plane. Which has a greater speed on reaching the ground?

NUMS 2019 Cancelled
Physics
Circular Motion and Momentum
Elimination Tool:

Heisenberg uncertainty principle states:

What is the angle made by the vector -i-5j with x-axis?

A bullet penetrating 30cm into its target loses its velocity by 50%. What additional distance will it penetrate into the target before it comes to rest?

NUMS 2019 Cancelled
Physics
Motion in Two Dimensions
Elimination Tool:

A hydrogen atom in its ground state absorbs 10.2 eV of energy. What is the orbital angular momentum is increased by?

PMC Sample 3
Physics
Atomic Spectra
Elimination Tool:

A constant force acting on a body of mass 5 kg changes its speed from 2 /s to 7 m/s in 10 s the direction of motion of the body remains unchanged. Find the magnitude of the force.

NTS 2013
Physics
Forces and Motion
Elimination Tool:

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:

Mechanical energy of an object is the sum of its Potential Energy and ?

The wavelength associated with an electron is of the order of:

PMC 2020
Physics
Wave Motion and Sound
Elimination Tool: