An alpha particle is ejected from the nucleus of an atom. Which of the following answers describes the change in the nucleus of the atom?

NUMS 2014
Physics
Nuclear Physics
Elimination Tool:

What is dimension of coefficient of viscosity?

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:

Two strings A and B of a sitar produces 6 beats per second. When the tension in string B is slightly reduced, beat frequency is reduced by 3 beats per second. If the frequency of string A is 324 Hz. then original frequency of string B was:

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

A capacitor and an inductor are connected to A.C. supply. If we double the frequency of A.C. supply then the effect on reactance of capacitor XC and reactance of inductor XL will be:

NUMS 2019 Cancelled
Physics
Electronics
Elimination Tool:

An electron describes a circular orbit of radius 2 cm in a uniform magnetic field. If the speed of the electron is doubled then the radius of the orbit will be:

NUMS 2015
Physics
Circular Motion and Momentum
Elimination Tool:

The base units of Young’s Modulus are:

NUMS 2019 Reconduct
Physics
Measurements
Elimination Tool:

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:

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

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

NUMS 2016
Physics
Electrostatics
Elimination Tool:

Electric field strength at a point between oppositely charged plates is ‘E’. If the distance between plates is reduced to half, what will be the new value of electric intensity?

NUMS Mock 3
Physics
Electrostatics

A person has to cover a distance of 6 km in 45 minutes. If he covers one-half of the distance in two-thirds of the total time; to cover the remaining distance in the remaining time his speed (in km/hr) must be:

The least distance of distinct vision for a normal eye is

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

In Heisenberg Principle:

If a stationary bar magnet is placed near a coil so that maximum lines of force passes through the coil, the galvanometer shows:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Which of the following statements is correct:

UHS 2011
Physics
Physics of Solids
Elimination Tool:

Which rays are used in LASER?

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

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:

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:

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:

The amount of heat provided to a system at constant pressure (qp) is equal to _______.

NTS 2012
Physics
Heat and Thermodynamics
Elimination Tool:

If an AC voltage of rms value of 10 volts is applied as input of a half-wave rectifier, then the voltage value of the DC output will be:

PMC Practice 4
Physics
Alternating Current
Elimination Tool:

Simple oscillating circuit consists of?

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:

Find the longest wavelength in the Paschen series, given R = 1.097 x 107m-1.

NUMS 2019 Reconduct
Physics
Atomic Spectra
Elimination Tool:

If voltage is 100V current is 10A and R Is 5ohm then internal resistance?

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

NUMS 2015
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

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

PMC Sample 3
Physics
Alternating Current
Elimination Tool:

If a car collides with a housefly, what will be the magnitude of the force experienced by the housefly?

NTS 2018
Physics
Forces and Motion
Elimination Tool:

Half wave voltage multipliers can provide what degree of voltage multiplication?

PMC Practice 4
Physics
Alternating Current
Elimination Tool:

In the breakdown region zener behaves like a

PMC Sample 2
Physics
Electronics
Elimination Tool:

The temperature coefficient of normal-conductor is negative because:

NUMS 2020
Physics
Heat and Thermodynamics
Elimination Tool:

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

PMC Practice 10
Physics
Electronics
Elimination Tool:

S.I. Unit of rate of flow of a fluid :

NUMS 2018
Physics
Fluid Dynamics
Elimination Tool:

Which is the unit of energy

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

Mutual inductance has a practical role in performance of:

PMC Practice 4
Physics
Alternating Current
Elimination Tool:

Alpha particle has

Ammeter lies in

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?

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:

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:

for normal adjustment, length of astronomical telescope is

Radiation cause damage in a)

Energy stored in capacitors connected in parallel

If a wave can be polarized, it means, it is:

NUMS 2016
Physics
Wave Motion and Sound
Elimination Tool:

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

PMC Practice 1
Physics
Scalars and Vectors
Elimination Tool:

If the speed of efflux through a small hole in a large tank is 9.8 m/s. Find the height at the fluid above the hole:

UHS 2012
Physics
Fluid Dynamics
Elimination Tool:

Identify the postulate(s) which help to formulate a mathematical model of gases.

I. A finite volume of gas consists of very large number of molecules

II. The size of the molecules is much smaller than the separation between molecules

III. Molecules do not exert force on each other except during a collision.

NUMS Mock 2
Physics
Heat and Thermodynamics

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:

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

Radian Is a:

Which one is the correct statement about selenium?

PMC Sample 2
Physics
Electrostatics
Elimination Tool:

Two forces equal in magnitude but opposite In direction and not acting along the same line constitute a couple. The movement of this couple will be:

NTS 2018
Physics
Forces and Motion
Elimination Tool:

A container is divided into two equal portions. One portion contains an ideal gas at pressure P and temperature T while the other portion is a perfect vacuum. If a hole is opened between two portions:

NUMS Mock 3
Physics
Heat and Thermodynamics

The current measuring part of the Avometer consists of a number of low resistors connected:

NUMS Mock 4
Physics
Magnetism and Electromagnetic Induction

A 100 watt bulb is operated by 240 volts, the current through the bulb will be:

NTS 2012
Physics
Current Electricity
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:

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:

Formula for Horizontal Range of  projectile is

Interference is shown by Light

In going form a denser to rarer medium a array of light is

Refrigerator is an example of:

NUMS 2020
Physics
Heat and Thermodynamics
Elimination Tool:

At resonance, the RLC circuit behaves like:

PIV stands for :

PMC 2020
Physics
Alternating Current
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:

According to kinetic theory,

NUMS 2019 Reconduct
Physics
Heat and Thermodynamics
Elimination Tool:

Consider the following examples of motion:

I. The daily motion of the earth about its own axis

II. The motion of planets around the sun

III. Sugar cane crushing machine is run by a camel that moves in a circular path around the machine.

IV. Rotation of flywheel about its axle.

Which of the following Is correct?

NTS 2015 DUHS and JSMU
Physics
Forces and Motion
Elimination Tool:

When speed is doubled the centripetal force will be?

In a practical transformer mutual induction between primary and secondary coils takes place. In such transformer what can be deduced about the power.

UHS 2018
Physics
Alternating Current
Work, Power & Energy
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)

NUMS Mock 2
Physics
Forces and Motion

Which is most sensitive to human eye?

Which behaves as a particle as well as wave

When the source moves towards an observer the frequency of waves as perceived by observer:

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

NUMS Mock 3
Physics
Oscillations and Simple Harmonic Motion

A negligible small current between input terminals of the operational amplifier is because of:

UHS 2019
Physics
Electronics
Elimination Tool:

A ball is thrown from some height; it strikes the ground and bounces back to the same height. This scenario represents which situation:

Ohm multiplied by farad is equivalent to:

PMC 2020
Physics
Electrostatics
Elimination Tool:

Unit of light year Is:

Centrifugal force of a body depends upon?

Which of the following has greater wavelength than red light?

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

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:

In a coil, when current changes from 10 A to 4 A in 1 s. An induced emf of 1.2 V is induced across the coil. The self – inductance of the coil is:

NUMS 2019 Cancelled
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

When we measure the nuclear masses and compare them with the masses of the constituent nucleus in free states, the mass of the nucleus is always less than the mass of the constituent nucleons. The difference in mass is known as:

NTS 2015 DUHS and JSMU
Physics
Nuclear Physics
Elimination Tool:

What are dimensions of Magnetic Flux

AC is converted to D.C by:

There are initially 400 atoms in a radioactive sample. What would be the number of atoms after 3 half – life?

PMC 2020
Physics
Nuclear Physics
Elimination Tool:

Which of the following phenomenon proves that light waves are transverse waves?

PMC Practice 4
Physics
Electromagnetic Waves
Elimination Tool: