Two charges are separated by a distance r, in presence of which of the following the force between them will be minimum?

terminal velocity of a water droplet is dependent on:

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:

Radiation can cause:

NTS 2011
Physics
Nuclear Physics
Elimination Tool:

Infrasonic waves have a frequency of:

PMC 2021 Tested
Physics
Electromagnetic Waves
Elimination Tool:

Number of Significant figures in 0.001634 Is:

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:

Parsec(pc) is the unit of ?

A battery of 6 volts is connected to two resistors of 3 ohm and 2 ohm joined together in series. What will be the current through the circuit?

NTS 2016 SMBBMC
Physics
Current Electricity
Elimination Tool:

Which of the following is a type of rectifier?

PMC Practice 15
Physics
Electronics
Elimination Tool:

SI unit of acceleration is

The power of a concave lens is

Projectile must be launched at which angle with the horizontal to attain maximum range?

NTS 2011
Physics
Motion in Two Dimensions
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:

If an object sinks in the water, then

If the unit vectors i, j, k are perpendicular to each other therefore

i.i = j.j = k.k = ______.

I.j = j.k = k.i = ______.

NTS 2016 SMBBMC
Physics
Scalars and Vectors
Elimination Tool:

The scalar or Dot product of Vectors (3i – 2j + 4k) and (2i + 2j – 3k) is _____.

NTS 2019
Physics
Scalars and Vectors
Elimination Tool:

A travelling wave, in which the particles of the distributed medium, move parallel to the direction of propagation of the wave is called:

NTS 2019
Physics
Wave Motion and Sound
Elimination Tool:

Minimum energy required to eject an electron from metal surface is called:

UHS 2019
Physics
Dawn of Modern Physics
Elimination Tool:

One complete circle is equal to:

NUMS 2020
Physics
Circular Motion and Momentum
Elimination Tool:

Electric potential is a quantity.

RLC circuit can be excited by

If a gas is heated at constant pressure, which of the following description(s) will apply?

I. The volume increased is proportional to the temperature

II. The kinetic energy of the molecules decrease

III. The kinetic energy of the molecules increases

NUMS Mock 4
Physics
Heat and Thermodynamics

Branch of physics which deals with sub atomic particles.

The energy stored in the capacitor is written as:

NUMS Mock 2
Physics
Electrostatics

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:

PIV stands for :

PMC 2020
Physics
Alternating Current
Elimination Tool:

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

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

PMC Sample 1
Physics
Atomic Spectra
Elimination Tool:

If the angle b/w electric field and vector area A is rr/3 then electric flux will be?

An object placed in front of a concave mirror at a distance of X cm from the pole gives a 3 times magnified real image. If it is moved a distance of X+5cm, the magnification of the image becomes 2. The focal length of the mirror is:

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

AC is converted to D.C by:

In a certain process, 400 J of heat energy is supplied to a system and at the same time 150 J of work is done by the system. The increase in internal energy of the system is _______.

NUMS Mock 4
Physics
Heat and Thermodynamics

Ammeter lies in

What is the name of the energy which is released when an atom is formed from its constituent particles?

NUMS Mock 3
Physics
Nuclear Physics

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:

Equation of continuity is expressed as:

NUMS 2018
Physics
Fluid Dynamics
Elimination Tool:

Two unequal resistances are connected parallel across a battery. Which of the following statements is true?

NUMS 2018
Physics
Current Electricity
Elimination Tool:

SI unit of electric field is volt/meter which is equivalent to:

NUMS 2019 Reconduct
Physics
Electrostatics
Elimination Tool:

A generator of e.m.f. 80 V has an internal resistance of 0.04 Ω. If its terminal voltage is 75 V, determine the current.

NTS 2013
Physics
Current Electricity
Elimination Tool:

A body starts sliding on a rough horizontal surface with a speed of 10 m/s. If the coefficient of friction is 0.2, find the distance traveled by the body before coming to rest. (g = 10m/s)

NTS 2010
Physics
Forces and Motion
Elimination Tool:

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

NUMS 2019 Reconduct
Physics
Forces and Motion
Elimination Tool:

When the frequency of the applied force becomes equal to one of natural frequencies of body then the body oscillates with maximum displacement this phenomenon is called:

UHS 2018
Physics
Wave Motion and Sound
Oscillations and Simple Harmonic Motion
Elimination Tool:

1 pascal = atm

Lasers are used for producing an intense, ____ and coherent beam of visible light.

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

Equations of kinetics are valid only when the acceleration is:

NTS 2018
Physics
Forces and Motion
Elimination Tool:

Which of the following statement shows that no work is done?

NUMS Mock 4
Physics
Work, Power and Energy

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

What are the Dimensions of P^2/m, where P is the momentum and m is the mass?

In a step-down transformer, the current in the primary coil is ______ than that in the secondary coil.

PMC 2021 Tested
Physics
Alternating Current
Elimination Tool:

The principle of an AC generator is.

NTS 2019
Physics
Alternating Current
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:

Torsion balance is used to measure:

Which of the following is dimensionless quantity?

NUMS 2018
Physics
Measurements
Elimination Tool:

When fluid is incompressible, it means:

NUMS 2018
Physics
Fluid Dynamics
Elimination Tool:

Lenz’s law in electromagnetic induction is the direct consequence of the principle of conservation of:

NUMS Mock 2
Physics
Magnetism and Electromagnetic Induction

What is the time period of sin(wt) ?

When a charge Q on a capacitor is doubled, then energy stored U will be:

NUMS 2020
Physics
Electrostatics
Elimination Tool:

Input resistance of an Operational Amplifier is:

NUMS 2019 Reconduct
Physics
Electronics
Elimination Tool:

When a transformer is connected to 120-volt ac, it supplies 3000 V to a device. The current through the secondary winding then is o.06 A and the current through the primary is 2 A. The number of turns in the primary winding is 400. The number of turns in the secondary winding is:

NTS 2016 DUHS & JSMU
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Transistors can be used as:

PMC Practice 10
Physics
Electronics
Elimination Tool:

Which one is the correct statement about selenium?

PMC Sample 2
Physics
Electrostatics
Elimination Tool:

Which behaves as a particle as well as wave

The ratio of tensile strength to tensile strain is called:

UHS 2012
Physics
Physics of Solids
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:

Germanium and silicon are semiconductors having crystalline structures. Both these materials have ______ valence electrons in their outermost shells.

NTS 2014
Physics
Electromagnetic Waves
Elimination Tool:

Volume of sphere having radius 17 cm Is:

When an electron jumps from outer to 5th orbit, then the spectral lines fall into region.

Suppose A =4.1, and B= 3.26 and the result from calculator comes to be 1.00876543. What should be the correct number of significant figures In final answer If multiplication and division only?

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:

Half-life of iodine-131 is 8 days. If 20mg is present initially. How much iodine is left behind after 2 half-lives?

NUMS 2020
Physics
Nuclear Physics
Elimination Tool:

A fixed mass of an ideal gas absorbs 1000 J of heat and expands under a constant pressure of 20 kPa from a volume of 25 x 10-3 m3 to a volume of 50 x 10-3 m3. What is the change in the internal energy of the gas?

NTS 2017
Physics
Heat and Thermodynamics
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

The quantity of heat required to raise the temperature of one mole of a substance through 1 K is called:

NTS 2010
Physics
Heat and Thermodynamics
Elimination Tool:

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:

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:

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:

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:

Black body radiations were first observed by:

Formula of maximum range of projectile is?

Percentage uncertainty in length and width of a rectangle is 2% and 3%. The total uncertainty in the area of that rectangle is?

UHS 2019
Physics
Measurements
Elimination Tool:

A wire has a spring constant of 5 x 104 N m-1. It is stretched by a force to extension of 1.4 mm. Calculate the strain energy stored in the wire.

UHS 2019
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

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

Transformer cannot step up

The spin of a photon is:

PMC 2021 Tested
Physics
Dawn of Modern Physics
Elimination Tool:

The torque will be greater if:

NTS 2011
Physics
Circular Motion and Momentum
Elimination Tool: