A diode works in _______ bias for rectification.

PMC Practice 6
Physics
Alternating Current
Elimination Tool:

Which of the following color has maximum energy?

The greek word “xeros” and “graphos” means:

PMC Sample 2
Physics
Electrostatics
Elimination Tool:

Fluorescence is produced when cathode rays strike on:

PMC 2021 Tested
Physics
Dawn of Modern 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 Mock 1
Physics
Nuclear Physics

A body having translatory motion possesses _____ and _____. In the same way a body having rotatory motion possesses _______ and _______.

NTS 2015 SMBBMC
Physics
Circular Motion and Momentum
Elimination Tool:

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:

Third law of Newton is also called:

NUMS 2016
Physics
Forces and Motion
Elimination Tool:

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 ball is thrown vertically upward with the velocity of 98 m/sec, how high does the ball rise?

NTS 2012
Physics
Motion in Two Dimensions
Elimination Tool:

Charge on an up-quark is:

The penetrating power of X rays increases with:

NUMS 2018
Physics
Atomic Spectra
Elimination Tool:

The distance between two consecutive antinodes is equal to:

NUMS 2018
Physics
Wave Motion and Sound
Elimination Tool:

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

Sodium nucleus consists of 11 protons and 12 neutrons. The conventional symbol of this nucleus is?

NTS 2014
Physics
Nuclear Physics
Elimination Tool:

Ball thrown freely from a tower reaches ground in 4s. The height of tower Is about

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:

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

NUMS 2015
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

Chromatic aberration can be removed by using

In case of harmonic oscillator total energy remains

PMC Sample 1
Physics
Work, Power and Energy
Elimination Tool:

Non-inverting amplifier circuits have?

PMC Practice 2
Physics
Electronics
Elimination Tool:

What will be the velocity of a body revolving In a circle of radius 2m with an angular velocity of 1 rev/sec?

Transformer cannot step up

The dimensions of momentum are the same as that of:

PMC 2021 Tested
Physics
Forces and Motion
Measurements
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:

A motion with increasing velocity can be represented on displacement-time graph by:

PMC Sample 1
Physics
Forces and Motion
Elimination Tool:

Longitudinal standing wave, in second harmonic mode, is established in a tube that is open at both ends. The length of the tube is 0.8m. What is the wavelength of the waves that make up the standing wave?

PMC Practice 10
Physics
Electromagnetic Waves
Elimination Tool:

A ball is thrown vertically upward with a velocity of 98 m/s. How long does it take to reach its highest point?

NTS 2016 SMBBMC
Physics
Motion in Two Dimensions
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 Sample 1
Physics
Wave Motion and Sound
Elimination Tool:

The beat frequency is given by:

NUMS 2014
Physics
Wave Motion and Sound
Elimination Tool:

By increasing the area of the plates and decreasing the distance between them, the capacitance of a capacitor:

NUMS Mock 3
Physics
Electrostatics

A stone attached to a rope which is whirled in a circle. If the rope breaks during the motion, the stone will move:

Electric charge on an object is measured as 5 microcoulombs. How the value of this charge can be expressed in terms of base units:

UHS 2012
Physics
Measurements
Elimination Tool:

Consider a car is travelling for one hour. In which of the following cases is the average velocity zero?

PMC Practice 2
Physics
Scalars and Vectors
Elimination Tool:

A fixed mass of gas in a thermally insulated container is compressed. After compression, the temperature of the gas will have:

NTS 2017
Physics
Heat and Thermodynamics
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:

The phenomena in which certain metals emit electrons when exposed to high-frequency light is known as?

NTS 2014
Physics
Dawn of Modern Physics
Elimination Tool:

Interference is shown by Light

Reactance of an Inductor Is given by:

A 50 watt bulb is operated by 120 volts. What is the current through the bulb?

NTS 2016 SMBBMC
Physics
Current Electricity
Elimination Tool:

The least distance of distinct vision for normal eye is approximately

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

NUMS Mock 4
Physics
Electrostatics

Which of the following affects our eye?

Second’s pendulum has frequency equal to?

Absolute zero is equivalent to:

NUMS Mock 2
Physics
Heat and Thermodynamics

For a satellite so that it could stay over the same point on Earth’s surface the orbital radius r is given by ________.

NUMS 2019 Reconduct
Physics
Gravitation
Elimination Tool:

The vector product of two vectors A and B is ____ vectors A and B.

NTS 2019
Physics
Scalars and Vectors
Elimination Tool:

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

PMC 2020
Physics
Alternating Current
Elimination Tool:

At what angle of projection of a projectile the range becomes half of its maximum value?

PMC 2020
Physics
Motion in Two Dimensions
Elimination Tool:

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:

Blood pressure of a healthy person is mm Hg.

A nucleus weighs less than Its sum of nucleons, a quantity known as the

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:

.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:

20 waves pass through a point in a medium, in 5 seconds. What is the time required for one wave to pass?

PMC Sample 2
Physics
Wave Motion and Sound
Elimination Tool:

Stokes’ Law for steady motion in a fluid of infinite extent is given by:

UHS 2012
Physics
Fluid Dynamics
Elimination Tool:

By increasing the area of the plates and decreasing the distance between them, the capacitance of a capacitor:

NUMS 2020
Physics
Electrostatics
Elimination Tool:

Which electrical quantity cannot be changed by a transformer?

Value of solar constant on the surface of Earth is:

The sum of all forms of molecular energies in a thermodynamic system is known as:

NTS 2017
Physics
Heat and Thermodynamics
Elimination Tool:

The frequency of applied AC is 2 kHz. Its time period will be:

PMC Practice 3
Physics
Alternating Current
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:

In transmission from grid station, power losses are minimized by:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Which of the following Is correct?

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

NTS 2017
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

Value of resistivity of iron Is

Bimetallic thermostat is an example of:

NTS 2018
Physics
Heat and Thermodynamics
Elimination Tool:

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

UHS 2015
Physics
Fluid Dynamics
Elimination Tool:

Which of the following is the angle of projection of a projectile if its range is equal to its height?

NUMS 2020
Physics
Forces and Motion
Elimination Tool:

A copper wire has resistances 10 ohms and 20 ohms at temperature 0 C and 10 C respectively. What is the temperature coefficient of the copper wire?

NUMS 2016
Physics
Heat and Thermodynamics
Elimination Tool:

A car 500 kg is travelling at a constant speed of 9 m/s round a curve of 100m. What is the centripetal force?

NTS 2019
Physics
Circular Motion and Momentum
Elimination Tool:

Apparent weight of a body In an elevator accelerating downwards is given by

If momentum is increased by 20% then K.E. increases by :

PMC Sample 2
Physics
Circular Motion and Momentum
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

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

UHS 2019
Physics
Dawn of Modern Physics
Elimination Tool:

An object whose mass is 100 g starts from rest and moves with constant acceleration of 20 cm / s2. At the end of 8s its momentum is ________ in g cm / s.

NTS 2016 DUHS & JSMU
Physics
Circular Motion and Momentum
Elimination Tool:

The chemical properties of elements depend on ________.

NUMS Mock 2
Physics
Nuclear Physics

Which rays are used in LASER?

PMC 2021 Tested
Physics
Electromagnetic Waves
Wave Motion and Sound
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:

How can we define linear magnification produced by a lens?

NTS 2015 SMBBMC
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

Electric conduction is high in:

NUMS 2016
Physics
Physics of Solids
Elimination Tool:

Power factor of the pure capacitive circuit is?

Two sample of gases ‘1’ and ‘2’ are taken at same temperature and pressure
but the ratio of number of their volume is V1
:V2 = 2:3. What is the ratio of the
number of moles of the gas sample?

UHS 2015
Physics
Fluid Dynamics
Elimination Tool:

Escape velocity of moon is

A double convex lens acts as a diverging lens when the object is placed

A body of mass m moving with velocity v has a kinetic energy. If its velocity is increased 25%. what will be the new K.E?

The angle made by the coil of an AC generator at a time Interval 3T/4 is?

Two identical bodies have a velocity ratio 2 : 3. What is the ratio of kinetic energies?

NUMS 2020
Physics
Work, Power and Energy
Elimination Tool:

For adiabatic process, the first law of thermodynamics is:

NUMS 2016
Physics
Heat and Thermodynamics
Elimination Tool:

In E = aT4  E stands for??

Two bodies X of mass 4kg  and Y of mass 6 kg have same linear momentum. If the kinetic energy of Y is 48 J then kinetic energy of body X is: