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

PMC Practice 4
Physics
Electromagnetic Waves
Elimination Tool:

Calculate the energy of a photon of wavelength 6600 Angstroms:

PMC Practice 5
Physics
Dawn of Modern Physics
Elimination Tool:

The moment of inertia of a solid sphere of mass ‘m’ having radius ‘r’ about a line passing through its center is:

NUMS 2019 Cancelled
Physics
Circular Motion and Momentum
Elimination Tool:

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

If T is to be increased to 37 then length of pendulum should be increased by:

A diffraction grating has 500 lines per mm, its grating element d is equal to:

UHS 2018
Physics
Optics, Nature of Light and Optical Instruments
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:

A uniform wire of resistance 3 ohm is folded in such a way that it forms an equilateral triangle, then what is it’s resistance across the ends of any two vertices?

NUMS Mock 1
Physics
Current Electricity

The half-life of C14 is approximately 5,730 years, while the half-life of C12 is essentially infinite. If the ratio of C14 to C12 in a certain sample is 25% less than the normal ratio in nature, how old is the sample?

NTS 2013
Physics
Nuclear Physics
Elimination Tool:

The unit of resistivity is:

NUMS 2020
Physics
Current Electricity
Elimination Tool:

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

NUMS 2019 Reconduct
Physics
Electrostatics
Elimination Tool:

When an observer moves with velocity of light, relative to a timing device at rest, he would notice:

NUMS 2015
Physics
Dawn of Modern Physics
Elimination Tool:

if the velocity of a body is reducing, the negative acceleration Is called:

A mass has constant acceleration, what is true about the force applied on it?

NUMS Mock 1
Physics
Forces and Motion

n which of the following more heat energy is produced?

) Twin paradox Is consequence of?

The time duration between two consecutive heartbeats of a normal human being is

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:

The entropy of the universe always:

NUMS 2016
Physics
Heat and Thermodynamics
Elimination Tool:

If a car moves from 15 m/s to 5 m/s in 10 sec then average acceleration is

PMC Sample 3
Physics
Motion in Two Dimensions
Elimination Tool:

As a result of the natural process the entropy

Volume of sphere having radius 17 cm Is:

for normal adjustment, length of astronomical telescope is

A bomb is dropped from an airplane moving horizontally with a speed of 200 km/h. If the air resistance is negligible, the bomb will reach the ground in 5 s, the altitude of the plane approximately is: (g = 9.8 m/s2)

NTS 2016 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

Compute the gravitational force of attraction between two balls each weighing 10 kg when placed at a distance of 1 metre apart.

NTS 2015 SMBBMC
Physics
Gravitation
Elimination Tool:

A jeep travelling at a constant speed of 108 km/hr rounds a curve of radius 100 m. Find its acceleration.

NTS 2015 SMBBMC
Physics
Circular Motion and Momentum
Elimination Tool:

Value of resistivity of iron Is

A car of mass 1200 kg initially at rest has been accelerated to a speed of 8 m/s in 16 meters. Average acceleration of the car is ______ m/s2? And force is _____ N?

NTS 2019
Physics
Forces and Motion
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:

A steel rod has a length of 15 m at a temperature of 30°C. If the temperature is raised to 45°C. The increase in its length is:

(α= 1.1 x 10-5 K-1)

NTS 2014
Physics
Heat and Thermodynamics
Elimination Tool:

• Q.145  A half-life of sodium-24 is __________ which is used to estimate the volume of blood in a patient:

Which of the following Is correct?

During the process of nuclear disintegration, when alpha particle emission occurs, atomic no. of the atom changes by _____ and its mass number changes by _____.

NTS 2016 DUHS & JSMU
Physics
Nuclear Physics
Elimination Tool:

When a train whistling passes near you, a considerable change in the pitch of the sound is heard. When the train is moving away, the pitch of the sound _____ whereas the pitch of the sound _____ when the train is approaching.

NTS 2019
Physics
Wave Motion and Sound
Elimination Tool:

At the instant the traffic light turns green, an automobile starts with a constant acceleration a of 2.1 m/s2. At the same instant a truck, traveling with a constant speed of 9.2 m/s, overtakes and passes the automobile. How far beyond the traffic signal will the automobile overtake the truck?

NTS 2010
Physics
Motion in Two Dimensions
Elimination Tool:

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

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

Rays produced by LED are:

PMC 2021 Tested
Physics
Electromagnetic Waves
Elimination Tool:

Whenever the average and instantaneous velocities are equal the body is said to have a:

NTS 2016 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

Example(s) of spin motion is/are:

NTS 2011
Physics
Circular Motion and Momentum
Elimination Tool:

Displacement of sun with respect to earth is

PMC Sample 2
Physics
Scalars and Vectors
Elimination Tool:

At which of the following places, motion of simple pendulum becomes slowest:

NUMS 2015
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

The sum of all forms of molecular energies (Kinetic and Potential) of a substance is termed as?

UHS 2019
Physics
Work, Power and Energy
Elimination Tool:

Seconds pendulum has time period

Q.125 SI Unit of current 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

The dimensions of angular velocity (ω) is:

NUMS 2019 Cancelled
Physics
Measurements
Elimination Tool:

Which rays are used in LASER?

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

_______ is a device which makes use of mutual induction for stepping up or down an alternating e.m.f.

NTS 2012
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Who was awarded Nobel Prize (1921) for explanation of Photoelectric Effect?

What is the work done by a body moving with 1 m/s velocity in circular orbit of radius 10m?

If the length of a current carrying solenoid is doubled keeping the number of turns same and the current is increased to 9 times, the value of magnetic field compared to the original magnetic field B will be:

The escape velocity of a body from the earth is Ve If the radius of the earth contracts to 1/4th its value, keeping the mass of the earth constant, the escape velocity will be

A proton Is moving in direction of negative x-axis, what will happen to it if potential difference of V = -10x + 7 is applied across the field.

A mass has constant acceleration, what is true about the force applied on it?

NUMS 2016
Physics
Forces and Motion
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:

The resistivity in SI units is measured in:

NTS 2016 DUHS & JSMU
Physics
Current Electricity
Elimination Tool:

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

PMC Sample 3
Physics
Atomic Spectra
Elimination Tool:

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

A half wave rectifier is operating from 50 Hz mains, fundamental frequency of ripple will be

PMC Sample 3
Physics
Alternating Current
Elimination Tool:

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:

The nucleus shape is considered to be:

PMC Practice 4
Physics
Atomic Spectra
Elimination Tool:

A/An _____ is that in which the momentum of the system as well as the kinetic energy of the system before and after the collision is conserved i.e. remains the same.

NTS 2016 SMBBMC
Physics
Work, Power and Energy
Elimination Tool:

Identify the examples of kinetic energy

A moving ball can break a glass window
A striking hammer can drive a nail
A stone thrown upward can lift itself against the force of gravity
NTS 2015 SMBBMC
Physics
Work, Power and Energy
Elimination Tool:

The equation ΔU = ΔQ refers to:

NTS 2012
Physics
Heat and Thermodynamics
Elimination Tool:

The ripple factor of half-wave rectifier is?

PMC Practice 14
Physics
Electronics
Elimination Tool:

Unit of emf?

The electron volt is the unit of __________.

PMC Practice 3
Physics
Electronics
Elimination Tool:

A solar day is the time interval between two successive appearances of the sun overhead. The time that is referred to the rotation of the earth about its axis is called:

NTS 2018
Physics
Gravitation
Elimination Tool:

An Inductor of 1H Is connected across a 220V, 50Hz supply. The peak value of current is approximately:

Which of the following consist of two quarks? a

A very large star of mass M and radius r undergoes a transformation into a neutron star. Assume that the mass remains constant while the radius of the star becomes 1/1,000 its original size, (1 × 10−3)r. How does the change in the radius of the star affect the force of gravity, Fg, acting between the star and a planet that is orbiting the star?

NUMS 2014
Physics
Gravitation
Elimination Tool:

In which of the following case(s) the work done be positive?

Radiation cause damage in a)

On the ground, the gravitational force on a satellite is W. What is the gravitational force on the satellite when at a height R/50, where R is the radius of the Earth?

NTS 2013
Physics
Gravitation
Elimination Tool:

Which of the following is the percentage of the original quantity of a radioactive material left after five half–lives approximately.

NUMS 2016
Physics
Nuclear Physics
Elimination Tool:

A common material for cushioning objects in packages is made by trapping bubbles of air between sheets of plastic. Is this material more effective at keeping the contents of the package from moving around inside the package?

PMC Practice 8
Physics
Electromagnetic Waves
Elimination Tool:

Which of the following is not a base unit in the SI system?

NTS 2016 SMBBMC
Physics
Measurements
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 wavelength associated with an electron is of the order of:

PMC 2020
Physics
Wave Motion and Sound
Elimination Tool:

A material that does NOT become radioactive after absorbing neutrons is called.

NTS 2019
Physics
Nuclear Physics
Elimination Tool:

The angular measurement is known as _____ measurement

PMC Sample 1
Physics
Circular Motion and Momentum
Elimination Tool:

A coil of 600 turns is threaded by a flux of 8×10-5 webers if this flux is reduced to 3×10-5 webers in 0.015 seconds. The average induced e.m.f. is:

NTS 2011
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Strain energy in a deformed energy is stored in the form of:

UHS 2015
Physics
Physics of Solids
Elimination Tool:

The lightest element which exhibits radioactivity is:

NTS 2017
Physics
Nuclear Physics
Elimination Tool:

A particle moves from position r = 3i+2j-6k to r = 14i+13j+9k under the action of a Force F = 8i+2j+6k. Find the work done
by the force:

NTS 2010
Physics
Scalars and Vectors
Elimination Tool:

The principle of an AC generator is.

NTS 2019
Physics
Alternating Current
Elimination Tool:

If the peak voltage is 9V, calculate the peak to peak voltage.

PMC Practice 8
Physics
Alternating Current
Elimination Tool:

An electron is situated midway between two parallel plates 0.5 cm apart. One of the plates is maintained at a potential of 60 volts above the other. The force on the electron is (e = -1.6×10-19)

NTS 2011
Physics
Electrostatics
Elimination Tool:

Full wave rectifier uses:

PMC Practice 5
Physics
Electronics
Elimination Tool:

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

NTS 2015 SMBBMC
Physics
Measurements
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