Kirchhoff’s first law is manifestation of:

NUMS Mock 3
Physics
Current Electricity

Unit of Angular Momentum? a) Kg m2 s’1b) c) Js-1 d) Both a and b

As the temperature of the black body is raised, the black body radiations become richer in:

NUMS 2015
Physics
Heat and Thermodynamics
Elimination Tool:

ML^2T^-3 is the dimension of:

If a compressible medium has bulk modulus denoted by B and density denoted by P, then a Newton’s formula for the speed of sound in a medium is _____.

NTS 2019
Physics
Wave Motion and Sound
Elimination Tool:

A battery has an e.m.f. of 4 V and internal resistance ‘r’. When this battery is connected to an internal resistance of 2 ohms, a current of 1 amp flows in the circuit. How much current will flow if the terminals of the battery are connected directly:-

NTS 2010
Physics
Current Electricity
Elimination Tool:

Red light is used in photographic dark room because of:

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

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

NTS 2016 DUHS & JSMU
Physics
Nuclear Physics
Elimination Tool:

A circuit that adds positive or negative D.C. voltage to an input sine wave is called:

PMC Practice 4
Physics
Alternating Current
Elimination Tool:

Electromagnetic wave theory was proposed by:

NTS 2015 SMBBMC
Physics
Dawn of Modern Physics
Elimination Tool:

The power of an electric bulb is 100W. It is connected to 110V power supply. The resistance of electric bulb will be?

NUMS 2020
Physics
Current Electricity
Elimination Tool:

Velocity is a:

PMC Practice 3
Physics
Scalars and Vectors
Elimination Tool:

Why picture on a TV screen become distorted when a magnet is brought near the screen?

NUMS Mock 2
Physics
Magnetism and Electromagnetic Induction

Particles which can be added to the nucleus of an atom without changing its chemical properties are:

NUMS 2017
Physics
Nuclear Physics
Elimination Tool:

A car is travelling in a straight line along a highway at a constant speed of 80miles per hour for 10 seconds. Find its acceleration.

NTS 2015 SMBBMC
Physics
Forces and Motion
Elimination Tool:

Spherical aberration can be reduced by using

Consider two capacitors with capacitance 2µF and 4µF. With which type of connection will the 4µF capacitor have a greater amount of stored energy than the 2µF capacitor?

PMC Practice 2
Physics
Alternating Current
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:

4.5 x 109 years is the half-life of:

NUMS 2020
Physics
Nuclear Physics
Elimination Tool:

The photocell is similar to:

PMC Practice 5
Physics
Dawn of Modern Physics
Elimination Tool:

Final image produced by a compound microscope is

A diode works in ___ bias for rectification.

PMC Practice 11
Physics
Electronics
Elimination Tool:

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

UHS 2019
Physics
Dawn of Modern Physics
Elimination Tool:

Parsec(pc) is the unit of ?

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:

Transformer is a device which steps up or steps down the input:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Species of the same element that have the same atomic number “Z” but have different mass number “A” are called ____ of that element.

NUMS 2017
Physics
Nuclear Physics
Elimination Tool:

If magnitude of charges is doubled and distance between them is halved, the force between them will become?

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

A vector such as the velocity of a body undergoing uniform translational motion, which can be displaced parallel to itself and applied to any point is known as:

NTS 2010
Physics
Scalars and Vectors
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:

Kilowatt-hour is a unit of?

NUMS 2020
Physics
Work, Power and Energy
Elimination Tool:

The electrical signals change into light signals for transmission through optical fibre. A light pulse
represent.

A guy is standing in a lift falling freely under gravity and releases a ball from hand. As seen by the ball, the boy:

NUMS 2017
Physics
Gravitation
Elimination Tool:

the period of rotation of geosynchronous satellite is

The basic source of geothermal energy is

X-rays are used to measure?

PMC Practice 8
Physics
Electromagnetic Waves
Elimination Tool:

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

ETEA 2018
Physics
Physics of Solids
Elimination Tool:

A body moves on a circular path subtending an angle of 2 radians at the center of a circle of radius 3.5 meters. The linear displacement of the body is _________.

NUMS 2019 Reconduct
Physics
Circular Motion and Momentum
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 rock is thrown straight upward from the edge of a 30 m cliff, rising 10 m then falling all the way down to the base of the cliff.

Find the rock’s displacement.

NTS 2014
Physics
Motion in Two Dimensions
Elimination Tool:

Pascal is equal to:

The object oscillates due to:

PMC Sample 2
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

When the length of simple pendulum is doubled, the ratio of its new time period to old time period is:

UHS 2019
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

Polarization explains light is ———

PMC Practice 8
Physics
Electromagnetic Waves
Elimination Tool:

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 2020
Physics
Nuclear Physics
Elimination Tool:

The down quark has charge ________.

PMC Practice 5
Physics
Atomic Spectra
Elimination Tool:

Coherent source of light means?

PMC Practice 3
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

Which of the following is not a type of rectifier?

PMC Practice 12
Physics
Electronics
Elimination Tool:

In Compton’s effect the wavelength of the scattered photon is

A wave of light having the wave equation r = ro sin(wt) reflects from the water surface. After reflection, the equation of the wave will be:

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:

If the diameter of the earth becomes two times its present value and its mass remains unchanged, then how would the weight of an object on the surface of the earth be affected?

NTS 2014
Physics
Gravitation
Elimination Tool:

The energy stored in the capacitor is written as:

NUMS Mock 2
Physics
Electrostatics

If an electron undergoes transition from 4th to 2nd orbit, then the color of radiations produced will be:

If the velocity of the body is decreasing, the acceleration is negative. The negative acceleration is known as:

NTS 2015 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

When a charged particle is projected perpendicular to a magnetic field:

NUMS 2016
Physics
Electrostatics
Elimination Tool:

The half-life of a radioactive element depends upon:

NUMS Mock 4
Physics
Nuclear Physics

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 number of protons in the nucleus is called _____ number.

PMC Sample 3
Physics
Atomic Spectra
Elimination Tool:

Technique for detecting the pressure of objects under water by acoustical echo is called:

NUMS 2018
Physics
Wave Motion and Sound
Elimination Tool:

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

NUMS 2016
Physics
Electrostatics
Elimination Tool:

The time period of a seconds pendulum on the surface of moon becomes:

NUMS Mock 3
Physics
Oscillations and Simple Harmonic Motion

Maximum acceleration with zero velocity is possible only for:

NUMS 2018
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

Light rays coming from the tube light are

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 a hole is dug to the center of earth and a ball is dropped in it, the ball will:

In a full-wave rectification, the number of diodes used are:

PMC 2020
Physics
Alternating Current
Elimination Tool:

Which of the following is a unit of Work?

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

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

A square coil of 16 cm has 200 turns and rotates in a uniform magnetic field of magnitude 0.05 T. If the peak emf is 12 V, what is the angular velocity of the coil?

NUMS 2015
Physics
Circular Motion and Momentum
Elimination Tool:

What are the units of a and b In v = a + bt, where unit of v=ms^-1 and t=s

Beta rays cannot be stopped by:

PMC Practice 11
Physics
Electromagnetic Waves
Elimination Tool:

Standing pattern of Nodes and Antlnodes form:

A simple pendulum completes one oscillation in 4 seconds. Calculate its length when g= 9.8 m/s2, as the time period of a simple pendulum is given by T = 2 π √(l/g)

NTS 2015 DUHS and JSMU
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

In rotation motion the torque is:

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

NUMS 2016
Physics
Physics of Solids
Elimination Tool:

Which of the following color has maximum energy?

Example(s) of spin motion is/are:

NTS 2011
Physics
Circular Motion and Momentum
Elimination Tool:

When a potential difference is applied across the ends of a uniform wire of length l and radius r, a current I flows in the wire. If same potential difference is applied to the ends of another wire of the same material but of length 2l and radius 2r, the current in the wire is:

NUMS Mock 4
Physics
Current Electricity

A circuit in which there is a current of 5 amp is changed so that the current falls to zero in 0.1s. If an average e.m.f of 200 volts is induced, what is the self-inductance of the circuit?

NTS 2014
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

A wire is stretched by a force ‘F’ which causes an extension ∆l, the energy stored in the wire is:

UHS 2012
Physics
Physics of Solids
Elimination Tool:

Which of the following types of force can do no work on the body on which it operates?

NTS 2016 SMBBMC
Physics
Forces and Motion
Elimination Tool:

The stress-strain graph, deduced the following limits successively:

UHS 2013
Physics
Physics of Solids
Elimination Tool:

Change in entropy does not depend on:

NUMS Mock 3
Physics
Heat and Thermodynamics

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

An electron is placed between two charged plates the upper plate is positively charged and the lower plate is negative charged. The electron will

1 femto is equal to

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