When a source is moving towards a stationary observer, the apparent change in frequency will be:

NUMS 2018
Physics
Wave Motion and Sound
Elimination Tool:

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

PMC Practice 6
Physics
Electronics
Elimination Tool:

Minimum frequency below which no electrons are emitted from the metal surface is called ______ frequency.

NTS 2016 DUHS & JSMU
Physics
Dawn of Modern Physics
Elimination Tool:

A particle having mass m and momentum p, the kinetic energy of the particle is given by:

PMC Sample 3
Physics
Work, Power and Energy
Elimination Tool:

Simple oscillating circuit consists of?

The time rate of change of linear momentum of a body is equal to:

NUMS 2020
Physics
Forces and Motion
Elimination Tool:

Work is a

PMC Sample 2
Physics
Scalars and Vectors
Elimination Tool:

The process of combining low frequency waves with high frequency is called:

Two long, parallel conductors which are free to move are arranged 1.0 cm apart. A steady current of 20 A flows in each of the conductors in the same direction. The conductors:

NUMS Mock 3
Physics
Magnetism and Electromagnetic Induction

If a dielectric material is placed between two plates of a capacitor, the net capacitance of the capacitor:

NTS 2018
Physics
Electrostatics
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

What happens to the pressure ‘p’ of an ideal gas, if the temperature is increased by a factor of 2 and the volume is increased by a factor of 8?

NUMS Mock 1
Physics
Heat and Thermodynamics

All the heat supplied to a system is converted into work in the ______ process.

NTS 2016 DUHS & JSMU
Physics
Heat and Thermodynamics
Elimination Tool:

A transistor cannot be used as

A spring of force constant 800 N/m has an extension of 5 cm, the work done in extending it from 5 cm to 15 cm

PMC Sample 3
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

An alternation voltage V (in volts) is represented by the equation:
V = 300 sin (100πt)
What is the value of “f” for this voltage?

UHS 2019
Physics
Alternating Current
Elimination Tool:

The central fringe in a diffraction pattern obtained by using a single slit is?

If electron passes through axis of solenoid the movement will be:

NUMS 2016
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:

Magnetic effect of electric current was first discovered by

The number of protons in the nucleus is called _____ number.

PMC Sample 3
Physics
Atomic Spectra
Elimination Tool:

Formula for Horizontal Range of  projectile is

The unit of the product of RC in the charging of a capacitor Is:

When the speed of body is doubled is momentum becomes

Voltage after which in forward bias current start to rise with increase in voltage is called:

PMC Sample 3
Physics
Alternating Current
Elimination Tool:

The target in the X ray unit is given a:

NUMS 2018
Physics
Atomic Spectra
Elimination Tool:

One of the following is a photoconductor :

PMC Practice 20
Physics
Physics of Solids
Elimination Tool:

The net charge flowing through any section of the conductor per unit time is known as?

NTS 2015 SMBBMC
Physics
Electrostatics
Elimination Tool:

The basic purpose of filter is to?

PMC Practice 1
Physics
Electronics
Elimination Tool:

A sample of an ideal gas may : expand adiabatically or expand isothermally. The net flow of heat into the gas from the exterior is:

NTS 2017
Physics
Heat and Thermodynamics
Elimination Tool:

Equation of SHM, with amplitude ‘a’ is given by:

NUMS 2015
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

From the given options, which one lists the amount of work done from smallest to Largest displacement is In forward direction?

The centripetal acceleration is maximum when radius r is:

PMC Sample 1
Physics
Circular Motion and Momentum
Elimination Tool:

The SI unit of magnetic flux is Weber which is equivalent to:

NUMS 2019 Reconduct
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

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

NUMS Mock 1
Physics
Fluid Dynamics

The frequency of a wave as the source approaches the observer with speed v

Unit of pressure?

in Damping

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

Value of resistivity of iron Is

In Young’s Double slit experiment, if the spacing between the slit is doubled and the linear distance from the screen is reduced to one half then the spacing between the two adjacent bright fringes will be ____ of actual value.

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

If the velocity of particle is varying linearly with time then shape of d-t curve would be

PMC Sample 2
Physics
Motion in Two Dimensions
Elimination Tool:

Moment of inertia of a sphere is:

Fusion and fission reactions are associated with:

NTS 2012
Physics
Nuclear Physics
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:

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:

Ratio of Electrical Constant to Gravitational constant is approximately:

When a body of weight ‘W’ is kept suspended by a string, the weight of the body pulls the string downwards, while the string pulls the body upwards with an equal force, this force is called?

NTS 2015 SMBBMC
Physics
Forces and Motion
Elimination Tool:

For a simple harmonic motion the acceleration of the body is _______ to displacement and always directed towards ________.

NUMS Mock 2
Physics
Oscillations and Simple Harmonic Motion

If length of solenoid gets doubled while keeping N (number of turns) constant, the resultant magnetic field will be?

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:

0.75 A current flows through an iron wire when a battery of 1.5 volts is connected across its ends. The length of the wire 5.0 m and its cross-sectional area is 2.5 x 10-7 m2. What is the resistivity of iron?

NTS 2015 DUHS and JSMU
Physics
Current Electricity
Elimination Tool:

What will be the gravitational force of attraction between two balls each weighing 5 kg when placed at a distance of 0.33 m apart. (G = 6.673 x 10-7 Nm2/kg2)

NTS 2015 DUHS and JSMU
Physics
Gravitation
Elimination Tool:

Which type of current passes through extrinsic semiconductors diode?

Aluminum Is a

What will the de Broglie wavelength of a 150 g mass moving with a velocity of 50 m/s be?

PMC 2021 Tested
Physics
Dawn of Modern Physics
Elimination Tool:

The beat frequency is given by:

NUMS 2014
Physics
Wave Motion and Sound
Elimination Tool:

In rotation motion the torque is:

The magnifying power of a compound microscope in terms of the magnification of the objective and
magnifying power of the eyepiece is given by

At resonance, the RLC circuit behaves like:

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:

In which of the following medium will the speed of sound be maximum?

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

NUMS Mock 1
Physics
Atomic Structure

The area under the extension-load graph Of an elastic material whose elastic limit has not been exceeded gives its:

NUMS Mock 2
Physics
Work, Power & Energy

Two vectors S and R are such that S= 4, R= 6 and S.R= 13.5. Find the angle between S and R.

NTS 2015 SMBBMC
Physics
Scalars and Vectors
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

How many quarks neutron and proton is made up of?

A wheel starts rotating from result with angular acceleration of 2 rads-2 till its angular speed becomes 6 rad/s. The angular displacement of the wheel will be equal to:

NUMS Mock 3
Physics
Circular Motion and Momentum

Ideal fluid is:

NUMS 2018
Physics
Fluid Dynamics
Elimination Tool:

When the antinodes, in stationary waves, are passing through their equilibrium position, the energy is:

NUMS Mock 2
Physics
Wave Motion and Sound

The time of open vibration of a simple pendulum may be decreased by:

NTS 2017
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

Echo is produced by reflection of sound waves from a denser medium. What is the phase change between sound wave and echo?

NUMS 2019 Cancelled
Physics
Wave Motion and Sound
Elimination Tool:

If the value of g is made g/16, what will be the effect on time period of pendulum?

If force of 2.5N changes the velocity from 50 m/s to 100m/s in time 50. the mass of the body’

The potential energy of a particle having a mass of 0.5 kg, moving along the x axis, is given by U= 2*x(x-3), where x = the distance moved by the particle. The speed of the particle will be maximum when it has moved a distance of:

PMC Sample 2
Physics
Work, Power and Energy
Elimination Tool:

Two vectors of magnitude 10m and 20m have an angle 30° between them. The component of shorter vector parallel to the longer vector will be:

A special class of waves that does not need a material medium for their propagation are called

NTS 2013
Physics
Wave Motion and Sound
Elimination Tool:

A body has mass 1 kg on earth. Its mass on moon will be

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:

The objective of a microscope is a lens of

An angular velocity of 60 revolutions per minute is the same as:

PMC Practice 4
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

If an electron jumps from 68′ orbit to 7 orbit, the increase in radius will be:

If three resistances RI, RI and R3 are connected In Parallel to the circuit such that RI> RI > RI. Which of the following will be true for the Equivalent Resistance R’?

Root mean square velocity of a gas having pressure ‘P’ and density ‘ρ’ is given
by:

UHS 2015
Physics
Fluid Dynamics
Elimination Tool:

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

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:

A photosensitive material would emit electrons if it is excited by a photon beyond a threshold. To cross the threshold, what should be increased?

PMC 2021 Tested
Physics
Dawn of Modern Physics
Elimination Tool:

Physics is an experimental science which depends heavily on:

NTS 2016 SMBBMC
Physics
Dawn of Modern Physics
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:

Photocell is similar to:

PMC Sample 2
Physics
Dawn of Modern Physics
Elimination Tool:

In the SI system of units, the fundamental units of mass, time and length are ____, _____ and ______ respectively.

NUMS 2019 Reconduct
Physics
Measurements
Elimination Tool:

If Cp = 10 & Cv = 7, then the general gas constant equals:

Which of the following are component of half wave rectifier?

PMC Practice 1
Physics
Alternating Current
Elimination Tool:

Two equal, opposite charges are fixed at a distance d. Positive charge is at the right and negative at the left position. As shown below:

X – Y + Z

At which position, the net electric field is directed to the left?

PMC Sample 2
Physics
Electrostatics
Elimination Tool: