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 a pipe is closed at one end and open at the other, the closed end is a:

PMC Sample 3
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

Siemen is the SI unit of:

If stress is doubled, then volume becomes

For the first time in 1914, Henry Moseley used X-rays for the determination of:

NTS 2018
Chemistry
Atomic Spectra
Elimination Tool:

A stone of mass 2.0 kg is dropped from a rest position 5.0 m above the ground. What is its velocity at a height of 3.0 m above the ground?

NUMS Mock 1
Physics
Forces and Motion

A shot leaves a gun at the rate of 160 m/s. Calculate the greatest distance to which it could be projected. (Take g = 10 m/s2)

NTS 2013
Physics
Motion in Two Dimensions
Elimination Tool:

Temperature co-efficient of resistance is:

The phase angle between two points in a medium is 3π/4. If the distance between these points is 20 cm, then the wavelength of the wave is?

NUMS Mock 3
Physics
Wave Motion and Sound

Energy emitted in the form of visible radiation is called:

2022 PMC Test 1
Physics
Electromagnetic Waves
Elimination Tool:

How much more thumb pressure must a nurse use to administer an injection with a hypodermic needle of inside diameter 0.30 mm compared to one with inside diameter 0.60 mm? Assume that the two needles have the same length and that the volume flow rate is the same in both cases.

NUMS Mock 1
Physics
Fluid Dynamics

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

Ammeter lies in

Artificial gravity can be supplied by which of the following ways so that normal force of gravity can be generated for the astronaut:

NTS 2011
Physics
Gravitation
Elimination Tool:

Transmutation occurs when rays are given out:

What is the constant of proportionality in ohms law:

If N, m, V and c represent the number of molecules, mass of a molecule, volume of cubical container and speed of a molecule respectively then by using the method dimensions, check which of the following expressions represents the pressure (p) of a gas?

NUMS 2019 Cancelled
Physics
Heat and Thermodynamics
Elimination Tool:

According to the first law of thermodynamics, ΔU = Q + W, where ΔU Is the increase in internal energy of the system, Q is the heat transferred to the system and W is the external work done on the system.
Which of the following is NOT a correct expression?

NTS 2010
Physics
Heat and Thermodynamics
Elimination Tool:

X-rays are also known as:

NTS 2015 DUHS and JSMU
Physics
Atomic Spectra
Elimination Tool:

In order to produce pair production the minimum energy of photon required is:

NTS 2019
Physics
Dawn of Modern Physics
Elimination Tool:

The wave in which crest and trough superimpose each other is ?

PMC 2021 Tested
Physics
Electromagnetic Waves
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:

X rays are similar in nature to:

NUMS 2018
Physics
Atomic Spectra
Elimination Tool:

Weight Is equivalent to which of the following

In a circuit, there is a current of 5 amp which is changed such that the current falls to zero in 0.1 sec. If an average e.m.f. of 200 volts is induced, the self-inductance of the circuit will be:

NTS 2012
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Majority charge carriers in P-type semiconductor are

PMC Sample 2
Physics
Electronics
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:

The unit of the product of RC in the charging of a capacitor Is:

Electric Generators work on the principle of:

A traveling wave, in which the particles of the disturbed medium move perpendicular to the direction of propagation of the wave is called:

NUMS Mock 3
Physics
Wave Motion and Sound

Consider a peak rectifier fed by a 60-Hz sinusoid having a peak value Vp = 100 V. Let the load resistance R = 10 kΩ. Calculate the fraction of the cycle during which the diode is conducting:

PMC Practice 13
Physics
Electronics
Elimination Tool:

Mass of a body with speed of light approaches to:

When the output power equals to one-half of the input power, efficiency of the transformer becomes:

NUMS 2015
Physics
Work, Power and Energy
Elimination Tool:

If a proton, alpha particle, and photon moving with the same velocity enter a uniform magnetic field, then which particle will deflect more?

PMC Practice 3
Physics
Atomic Spectra
Elimination Tool:

The polarization of light by tourmaline crystals is due to the ______effect.

NTS 2019
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

What is the device which is used to measure magnetic field

Magnetic effect of electric current was first discovered by

In rotational motion, angular momentum plays a role which is analogous to that played by _____ in linear motion.

NUMS 2017
Physics
Circular Motion and Momentum
Elimination Tool:

In microwave ovens ____ is used to heat the food

PMC Practice 33
Physics
Electromagnetic Waves
Elimination Tool:

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

UHS 2018
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

mho is the unit of 7

In a half wave rectifier, the diode conducts during:

NUMS Mock 1
Physics
Electronics

Which material is used as common conductor In daily use?

The direction of induced emf is given by which of the following law?

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:

car travels a distance of 350 miles in 5.0 hours find its average speed.

A car at rest starts moving with linear uniformly increasing velocity. After 20 seconds, it attains the maximum velocity of 80 m/s. What is the distance covered during this time interval?

NUMS 2019 Cancelled
Physics
Forces and Motion
Elimination Tool:

Newton’s first law Is applicable on:

I) Body In motion II) Body In rest

For gaining an atomic spectra, an evacuated glass tube is filled with:

NUMS 2020
Physics
Atomic Spectra
Elimination Tool:

The base units of Young’s Modulus are:

NUMS 2019 Reconduct
Physics
Measurements
Elimination Tool:

The basic purpose of filter is to?

PMC Practice 1
Physics
Electronics
Elimination Tool:

What’s relation between penetrating power and Ionization power

A particle is projected at an angle of 45 degrees with a velocity of 9.8 m/s. The horizontal range will be:

(g=9.8 m/s2)

NTS 2012
Physics
Motion in Two Dimensions
Elimination Tool:

Mass flow per second of the fluid is given by:

UHS 2015
Physics
Fluid Dynamics
Elimination Tool:

The dimensions of angular velocity (ω) is:

NUMS 2019 Cancelled
Physics
Measurements
Elimination Tool:

A body is executing simple harmonic motion if:

NTS 2015 SMBBMC
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

Which is evaporating cooler?

Least count of micrometer screw gauge is

Two cars are travelling towards each other on a straight road at velocities 15 m/s and 16 m/s respectively. When they are 150 m apart, both the drivers apply the brakes and the cars decelerate at 3 m/s2 and 4 m/s2 until they stop. Separation between the cars when they come to rest is :

PMC Sample 2
Physics
Motion in Two Dimensions
Elimination Tool:

In which of the following the pn Junction is used?

The points which are in phase are separated from one another through a distance of :

PMC Sample 1
Physics
Wave Motion and Sound
Elimination Tool:

The absolute standard of rest is:

The speed of the sound in air is 332 m/s. The speed of sound at 22 degrees centigrade will be:

NUMS Mock 4
Physics
Wave Motion and Sound

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 = ______.

NUMS Mock 2
Physics
Scalars and Vectors

Half wave voltage multiplier can provide any degree of voltage multiplication by cascading diodes and capacitors.

PMC Practice 12
Physics
Electronics
Elimination Tool:

In mass-spring system, which of the following does not depend on the initial displacement of the spring?

PMC Practice 4
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

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

PMC Sample 3
Physics
Atomic Spectra
Elimination Tool:

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

22320 cal heat is supplied to 100g of ice at zero degree centigrade. If the latent heat of fusion of ice is 80 cal /g and latent heat of vaporization of water is 540 cal/g the final amount of water thus obtained and its temperature respectively are:

NUMS 2019 Cancelled
Physics
Heat and Thermodynamics
Elimination Tool:

Moment of inertia of a thin rod of mass m, length l about a line passing through its center is:

NUMS 2019 Cancelled
Physics
Circular Motion and Momentum
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 carrying electricity on long distances. Step up transformer are used to:

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

NUMS 2019 Reconduct
Physics
Electrostatics
Elimination Tool:

Gamma-ray (?) can produce ionization in which of the following way/s?

I. It may lose all its energy in a single encounter with the electron of an atom (Photoelectric effect).

II. It may lose only a part of its energy in an encounter (Compton effect).

III. Very few of very high energy ? ray photons may impinge directly on heavy nuclei, be stopped and annihilated giving rise to electron-positron pairs (The materialization of energy).

NTS 2013
Physics
Dawn of Modern Physics
Elimination Tool:

A 100 kg golf ball is moving to the right with a velocity of 20 m/s. It makes a head on collision with an 8 kg steel ball, initially at rest. The two balls get stuck together. What will the velocity of these two balls after collision?

NTS 2015 DUHS and JSMU
Physics
Circular Motion and Momentum
Elimination Tool:

In hydrogen spectrum If nj = 6, then the spectral lines lie In:

When the output power equals to one-half of the input power, efficiency of the transformer becomes:

NUMS Mock 4
Physics
Work, Power and Energy

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

NUMS 2017
Physics
Nuclear Physics
Elimination Tool:

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

Which of the following has greater wavelength than red light?

If two or more resistors are joined to each other side by side, this combination is called:

NUMS 2018
Physics
Current Electricity
Elimination Tool:

A microscope has an objective of 10 mm focal length and an eye piece of 25 mm focal length. What is the distance between the lenses, if the object is in sharp focus when it is 10.5 mm from the objective?

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

Energy of sound waves is proportional to:

Value of Wien’s constant is?

Two point charges of +5 C and -12 C attract each other with a force of 1.48 N. charge of -5 C is added to each of these charges. Now the force will be:

NUMS 2015
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

1 kilowatt hour =

NUMS 2020
Physics
Work, Power and Energy
Elimination Tool:

The SI unit for intensity of sound is:

NTS 2015 SMBBMC
Physics
Wave Motion and Sound
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

Two point charges of +5 C and -12 C attract each other with a force of 1.48 N. charge of -5 C is added to each of these charges. Now the force will be:

NUMS Mock 4
Physics
Magnetism and Electromagnetic Induction

_______ is also known as anti-electron.

NTS 2017
Physics
Nuclear Physics
Elimination Tool: