The rectifier is a device which converts?

PMC Practice 3
Physics
Alternating Current
Elimination Tool:

A convex lens gives a virtual image only when the objects leis

that the supply for the potentiometer is taken?

PMC Practice 8
Physics
Alternating Current
Elimination Tool:

What happens to bulk of potential energy of a glass that falls from a table and breaks

If an object sinks in the water, then

If the velocity of particle is varying linearly with time then shape of d-t curve would be

PMC Sample 2
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:

Which series is emitted when electron Jumps from a higher orbit to fifth orbit?

A special class of waves that does not need a material medium for their propagation are called

NUMS Mock 4
Physics
Physics of Solids
Wave Motion and Sound

Energy consumed by 60 watt bulb in 2 minutes is equal to:

UHS 2018
Physics
Work, Power and Energy
Elimination Tool:

if a car starts from rest and reaches 20 m/s velocity in 10 s then acceleration is:

PMC Sample 3
Physics
Motion in Two Dimensions
Elimination Tool:

Conductivity equals:

Transformer is a device which steps up or steps down the input:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

When an electron and its antiparticle positron come close enough to each other, they completely convert into radiation energy in the form of photons, this process is called:

NTS 2018
Physics
Dawn of Modern Physics
Elimination Tool:

e/m for an electron is ______, when the charge of an electron is 1.6 x 10-19C and mass of electron is 9.1 x 10-31kg.

NUMS 2019 Reconduct
Physics
Electrostatics
Elimination Tool:

Magnifying power of simple microscope

In a ripple tank, 40 waves pass through a certain point in one second. If the wavelength of the waves is 5 cm, then find the speed of the wave:

NUMS 2020
Physics
Wave Motion and Sound
Elimination Tool:

If a 2 µF capacitor is connected, by closing a switch, to a supply of 100 volts through  1M ohm  series resistance. What will be the time constant?

The lightest element which exhibits radioactivity is:

NTS 2017
Physics
Nuclear Physics
Elimination Tool:

An astronomical telescope has Magnifying power 5. If the focal length is 20 cm then what is the focal length of the objective?

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

Moment of inertia of a sphere is:

A proton is about 1840 times heavier than an electron. When it is accelerated by a potential difference of 1kV, its kinetic energy will be:

NUMS Mock 4
Physics
Magnetism and Electromagnetic Induction

A 3-cm length of wire is moved at right angles across a uniform magnetic field with a speed of 2.0 m/s . If the flux density is 5.0 teslas, what is the magnitude of the induced e.m.f?

NUMS Mock 1
Physics
Magnetism and Electromagnetic Induction

In a certain circuit, a transistor has a collector current of 10mA and a base current of 40μA. What is the current gain of the transistor?

NTS 2015 DUHS and JSMU
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

A red colored cloth red light

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:

Unit of Angular Momentum? a) Kg m2 s’1b) c) Js-1 d) Both a and b

The half-life of a radioactive element depends upon:

NUMS Mock 4
Physics
Nuclear Physics

If a force of 1 N acts on a body through a distance of 1 m in the direction of force, how much
work is done?

When the speed of body is doubled is momentum becomes

The rapid escape of air from a burst tyre is an example of:

NUMS 2020
Physics
Heat and Thermodynamics
Elimination Tool:

Work done, due to centripetal force, for circular motion will be:

NUMS Mock 1
Physics
Circular Motion and Momentum

Which one of the following waves needs a medium to travel?

PMC 2021 Tested
Physics
Electromagnetic Waves
Elimination Tool:

In the SI system of units, the fundamental units of mass, time and length are ____, _____ and ______ respectively.

NUMS 2019 Reconduct
Physics
Measurements
Elimination Tool:

A conductor carrying a current ‘I’ has length ‘L’. When it is placed in a magnetic field, ‘B’ at 90 degrees , it experiences a force:

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

Critical angle is that incident angle in denser medium for which angle of refraction is.

A changing electric field produces

A line normal to the wavefront, showing the direction of the propagation of light is called the:

PMC Practice 2
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

When brakes of a car are applied, angular velocity of a flywheel reduces from 900 cycle / min to 720 cycle / min in 6 sec. Angular retardation is:

NUMS 2015
Physics
Circular Motion and Momentum
Elimination Tool:

A ship approaching a seaport at 10 km/h sends a sonic signal of frequency of 1000 Hz. What is the apparent frequency of the signal as received by a receiver on the seaport?

NUMS Mock 4
Physics
Wave Motion and Sound

The area under force-displacement graph gives us:

NUMS 2020
Physics
Forces and Motion
Elimination Tool:

Light rays coming from the tube light are

When interference between thin films occurs, the path difference between two interfering rays is 2t. If ‘n’ is the refractive index of the medium, the bright circles are obtained when ________ with m = 0, 1, 2, 3, …

NUMS 2019 Reconduct
Physics
Electromagnetic Waves
Elimination Tool:

In a Young’s double-slit experiment, fringes are very close to each other. How can we increase the distance between fringes?

PMC Practice 1
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

If, the speed of waves is 10m/sec and its frequency is 5Hz. Find its wavelength.

NUMS 2016
Physics
Wave Motion and Sound
Elimination Tool:

(1, 1, 1) • (2, 2, 2) =

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:

Q.91 The source of gamma radiation is

The total energy of a block, executing simple harmonic motion is:

NUMS Mock 1
Physics
Oscillations and Simple Harmonic Motion

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:

A torold is?  l• A circular ring shape of a coil. II- A solenoid bent In shape of a circle. a) I only b) II only

_______ 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:

Which is the unit of energy

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

Beats can be used to find:

PMC Practice 1
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

An atom would be neutral if it has equal number of:

PMC Practice 5
Physics
Atomic Spectra
Elimination Tool:

Equation of continuity is expressed as:

NUMS 2018
Physics
Fluid Dynamics
Elimination Tool:

The energy stored in the capacitor is written as:

NUMS 2019 Cancelled
Physics
Electrostatics
Elimination Tool:

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

If a face acts on a body for 2 sec and its rate of change of momentum is 50, the force acting on the body is:

A factory buys 100 kg of a radioactive chemical with a half-life of 5 years which decays to a stable compound. How much of the chemical will still be radioactive in 10 years time.

NUMS 2017
Physics
Nuclear Physics
Elimination Tool:

If speed of a fan in a room is Increased then the temperature of air in the room will

White light gives spectrum after undergoing:

PMC Sample 2
Physics
Dawn of Modern Physics
Elimination Tool:

In a ripple tank, 40 waves pass through a certain point in 1 second. If the wavelength of the wave is 5 cm, then speed of the wave is:

PMC 2020
Physics
Wave Motion and Sound
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

On doubling the mass, the linear momentum and angular momentum of the body will be:

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:

Which of the following can cause least Ionization but has high Penetrating Power?

The product of cross-sectional area of the pipe and the fluid speed at any point along the pipe:

UHS 2013
Physics
Fluid Dynamics
Elimination Tool:

Which of the following color has the highest energy?

If a magnetic field around a current carrying wire is anticlockwise then the direction of current flow is a

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

UHS 2019
Physics
Electronics
Elimination Tool:

Consider an object placed on a frictionless inclined plane at a height of 5m , if it is released, what will be its velocity at the bottom of the inclined plane?

NUMS Mock 3
Physics
Forces and Motion

Two vectors are of magnitude 50 and 31,the resultant might be?

If constant temperature conditions are applied to a gas container, then the volume of the mass of that gas tends to increase by:

NTS 2018
Physics
Heat and Thermodynamics
Elimination Tool:

If the temperature is increased from 200K to 800K, then what would be the change in pressure at constant volume?

NUMS Mock 2
Physics
Heat and Thermodynamics

If stress is doubled, then volume becomes

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

NUMS Mock 2
Physics
Dawn of Modern Physics

Let L be the length and d be the diameter of the cross section of a wire. Wires of the same material with different L and d are subjected to the same tension along the length of the wire. In which of the following cases the extension of wire will be the maximum?

NUMS 2019 Cancelled
Physics
Physics of Solids
Elimination Tool:

In elastic collision

The energy stored inside a capacitor is given by the relation:

NUMS 2019 Reconduct
Physics
Electrostatics
Elimination Tool:

A wheel starts rotating from result with angular acceleration of 2 rads-2 till its angular speed becomes 6 rad/s. The angular displacement of the wheel will be equal to:

NUMS Mock 3
Physics
Circular Motion and Momentum

Acceleration of a body executing SHM is directed towards:

A nucleus consists of 19 protons and 20 neutrons. The conventional symbol of this nucleus is:

NTS 2013
Physics
Atomic Spectra
Elimination Tool:

Energy stored in capacitors connected in parallel

Consider two capacitors with capacitance 2µF and 4µF. With which type of connection will the 4µF capacitor have a greater amount of stored energy than the 2µF capacitor?

PMC Practice 2
Physics
Alternating Current
Elimination Tool:

The frequency of a string on a musical instrument can be changed either by:

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

A ship approaching a seaport at 10 km/h sends a sonic signal of frequency of 1000 Hz. What is the apparent frequency of the signal as received by a receiver on the seaport?

NUMS 2015
Physics
Wave Motion and Sound
Elimination Tool:

Photocell is similar to:

PMC Sample 2
Physics
Dawn of Modern Physics
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 of the following Is correct?

If we drop an object, it’s initial velocity is zero. How far will it fall in time ‘t’?

PMC 2020
Physics
Motion in Two Dimensions
Elimination Tool:

A type of metals containing alloys, ceramics etc., when heated their temperature reaches to a state called Transition temperature state and their resistance reaches to zero. These types of metals are called:

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:

When a wire is compressed and it’s radius becomes 2R then it’s resistance will be:

PMC 2020
Physics
Current Electricity
Elimination Tool:

In interference energy destroyed