The change in resistance of metallic conductor at temperature below 0 degrees is:

PMC 2020
Physics
Current Electricity
Elimination Tool:

An electron is moving along the axis of a solenoid carrying a current. Which of the following is a correct statement about the electromagnetic force acting on the electron?

NUMS 2015
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Confining of wave into one plane is called

The beat frequency is given by:

NUMS 2014
Physics
Wave Motion and Sound
Elimination Tool:

Wave nature of light is proved by:

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

During radioactive decay of a nucleus zXA, β emission takes place along with the daughter nucleus. Because of this beta particle emission, the mass number (A) of the parent nucleus:

NTS 2018
Physics
Nuclear Physics
Elimination Tool:

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

UHS 2018
Physics
Work, Power and Energy
Elimination Tool:

The anti-particle of quark is _________.

PMC Practice 5
Physics
Atomic Spectra
Elimination Tool:

When we lift an object, we do work against which of the following:

1) Friction                      2) Gravity

For a stiff spring, the value of spring constant is:

NUMS Mock 1
Physics
Oscillations and Simple Harmonic Motion

On increasing the spring constant to 4 times its value:

Find the heat transferred to or from the system when a thermodynamics system undergoes a process in which its internal energy decreases by 300 J. If at the same time, 120 J of work is done on the system.

NTS 2016 DUHS & JSMU
Physics
Heat and Thermodynamics
Elimination Tool:

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:

A body moves on a circular path subtending an angle of 2 radians at the center of a circle of radius 3.5 meters. The linear displacement of the body is _________.

NUMS 2019 Reconduct
Physics
Circular Motion and Momentum
Elimination Tool:

Which is evaporating cooler?

Electromagnetic waves are produced due to flow of

Electrons are emitted in the production of X rays by:

NUMS Mock 1
Physics
Atomic Spectra

if particles are displaced In direction perpendicular to waves then waves are? a)

The oscillating object overshoots the rest position due to:

i.(j*k)

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:

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

NTS 2019
Physics
Scalars and Vectors
Elimination Tool:

A battery has an e.m.f of 6.0 volts and an internal resistance of 0.4 ohm. It is connected to a 2.6 ohm resistor through a SPST (single pole, single throw switch):

When the switch is closed, the potential difference between the terminal Is, in volts is:

NTS 2010
Physics
Current Electricity
Elimination Tool:

In a periodic wave, the distance between second and fifth crests is 15 cm, what is the wavelength of the wave?

PMC Sample 1
Physics
Wave Motion and Sound
Elimination Tool:

Two spheres of the same size, one of mass 5 kg and the other of mass 50 g are dropped simultaneously from a tower. When they are about to touch the ground, they have the same:

NUMS 2015
Physics
Gravitation
Elimination Tool:

Kelvin, the unit of thermodynamic temperature is _____ of the thermodynamic temperature of the triple point of water.

NTS 2014
Physics
Heat and Thermodynamics
Elimination Tool:

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

PMC 2020
Physics
Wave Motion and Sound
Elimination Tool:

X rays are similar in nature to:

NUMS 2018
Physics
Atomic Spectra
Elimination Tool:

Light rays coming from the tube light are

Value of resistivity of iron Is

A convex lens of focal length ‘f1’and a concave lens of focal length ‘f2’ are placed in contact. The focal
length of the combination is

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

NTS 2018
Chemistry
Atomic Spectra
Elimination Tool:

When describing the isotopes of the same element, the most accurate statement is that they have:

NTS 2017
Physics
Atomic Spectra
Elimination Tool:

If each particle of fluid is passing through the same point, what would be the flow?

NUMS 2016
Physics
Fluid Dynamics
Elimination Tool:

If the volume of a gas is fixed then on increasing its temperature, its pressure______

NTS 2016 SMBBMC
Physics
Heat and Thermodynamics
Elimination Tool:

Energy stored in capacitor is represented by.

Which of the following are component of half wave rectifier?

PMC Practice 1
Physics
Alternating Current
Elimination Tool:

Power of RCL circuit at resonance Is?

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

PMC Practice 8
Physics
Alternating Current
Elimination Tool:

If the actual weight of a person standing in an elevator is 75N, and the apparent weight in the accelerated elevator is 105N, find the acceleration and direction of elevator motion. (Use g 10 m/s2)

A cyclist is moving towards the right with an acceleration of 4m/sec2. At t=0, he has traveled 5m moving towards the right at 15 m/sec. What will be his position at t = 2 seconds?

NTS 2018
Physics
Forces and Motion
Elimination Tool:

A metal sphere of radius r is dropped into a tank of water. As it sink at speed v, it experience a drag force F given by F= krv, where k is a constant: What are the SI base units of k?

ETEA 2017
Physics
Measurements
Elimination Tool:

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

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

NUMS 2015
Physics
Oscillations and Simple Harmonic Motion
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:

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 target in the X ray unit is given a:

NUMS 2018
Physics
Atomic Spectra
Elimination Tool:

When a transformer is connected to 120-volt ac, it supplies 3000 V to a device. The current through the secondary winding then is o.06 A and the current through the primary is 2 A. The number of turns in the primary winding is 400. The number of turns in the secondary winding is:

NTS 2016 DUHS & JSMU
Physics
Magnetism and Electromagnetic Induction
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:

The linear magnification produced by a lens is defined as the ratio of the:

I. Size of the image to the size of object

II. Size of the lens to the size of object

III. Size of the lens to the size of the image

NTS 2013
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

speed of sound is greatest in

When a body is falling under the action of gravity the direction of acceleration is:

0.37q charge Is stored on the capacitor, what will be the current?

A neutron travels a distance of 24 m in a time interval of 3.6 x 10^-4 s. Assuming its speed was constant. Find its kinetic energy. Take 1.7 x 10^-27 kg as the mass of the neutron.

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

Centrifugal force of a body depends upon?

The laws of motion show the relation between

The instrument(s) which work on the principle of Wheatstone bridge is/are:

NTS 2012
Physics
Current Electricity
Elimination Tool:

1 radian is equal to:

PMC 2020
Physics
Circular Motion and Momentum
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 2015
Physics
Fluid Dynamics
Elimination Tool:

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:

Center of gravity of a cup Iles

that the supply for the potentiometer is taken?

PMC Practice 8
Physics
Alternating Current
Elimination Tool:

The region that lies between IR and UV regions is called:

PMC 2021 Tested
Physics
Electromagnetic Waves
Elimination Tool:

In electronic circuits, a PN junction diode is used to convert alternating current into direct current. This process is called:

NTS 2018
Physics
Alternating Current
Elimination Tool:

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

Laser light is

Two negative charges are present at a distance d. A third positive charge is placed somewhere between these charges. This positive charge will be in equilibrium.

A stone dropped from the roof of a building takes 4 s to reach the ground. The height of the building is:

NUMS 2017
Physics
Motion in Two Dimensions
Elimination Tool:

A horizontal line in a displacement-time graph represents:

PMC Sample 1
Physics
Motion in Two Dimensions
Elimination Tool:

Number of Significant figures in 0.001634 Is:

A ball moving horizontally with speed ‘v’ strikes the bob of a simple pendulum at rest. The mass of the bob is equal to that of the ball if the collision is elastic the bob will rise to a height:

NTS 2010
Physics
Circular Motion and Momentum
Elimination Tool:

The quantity of heat required to raise the temperature of one mole of a substance through 1 K is called:

NTS 2010
Physics
Heat and Thermodynamics
Elimination Tool:

Transistors can be used as:

PMC Practice 10
Physics
Electronics
Elimination Tool:

If the instantaneous current in a circuit is given by I = A sin (wt) ampere, the RMS value of the current is:

PMC Practice 3
Physics
Alternating Current
Elimination Tool:

• Q.132 In stretched string the frequency of vibration is given by f=1/2LVF/m. In this equation m has dimension

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

UHS 2012
Physics
Fluid Dynamics
Elimination Tool:

If the dot product of vectors Is equal to product of their magnitudes, the angle between them

Moment of inertia in angular motion plays the same role as

When a force acts at right angles to the displacement (θ=90°) the work done is zero i.e. the force does not produce work. Identify the example/s from the following when work is zero.

I. It is considered ‘hard work’ to hold a heavy stone stationary at stretched hand

II. A person walks along a level surface while carrying a box

III. when a body moves in circular path

NTS 2014
Physics
Forces and Motion
Elimination Tool:

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

NTS 2017
Physics
Heat and Thermodynamics
Elimination Tool:

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 Mock 4
Physics
Forces and Motion

1 femto

a) 10-15

b) 10-9

c) 10-6

d) None

A body is hanging from a rigid support by an extensible string of length L. It is struck inelastically by an identical body of mass m with horizontal velocity v =√2gl , the tension in the string increases just after striking by:

NTS 2019
Physics
Circular Motion and Momentum
Elimination Tool:

The mass of earth on the basis of Newton’s Law of Gravitation is given by:

NTS 2012
Physics
Gravitation
Elimination Tool:

Product of Force and Time Is

Maximum acceleration with zero velocity is possible only for:

NUMS 2018
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

To remove the huge amount of heat energy in a nuclear reactor, _____ is/are used

NUMS Mock 4
Physics
Nuclear Physics

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:

Operational amplifier with an LDR is used as a:

NUMS 2019 Reconduct
Physics
Electronics
Elimination Tool:

Unit of Momentum Is?

The down quark has charge ________.

PMC Practice 5
Physics
Atomic Spectra
Elimination Tool:

Which behaves as a particle as well as wave

If length of a wire is Increased two times and Its cross-sectional area is reduced to half, the resistance of the wire will be:

A particle carrying charge of 2e falls through a potential difference of 3.0 V. Calculate energy acquired by it.

NTS 2015 DUHS and JSMU
Physics
Electrostatics
Elimination Tool:

X-rays have frequency greater than