Two long, parallel conductors which are free to move are arranged 1.0 cm apart. A steady current of 20 A flows in each of the conductors in the same direction. The conductors:

NUMS Mock 3
Physics
Magnetism and Electromagnetic Induction

The number of diodes in bridge rectifier is

PMC Sample 3
Physics
Alternating Current
Elimination Tool:

If v = a + bt, the dimensions of a and b are

For adiabatic process, the first law of thermodynamics is:

NUMS 2016
Physics
Heat and Thermodynamics
Elimination Tool:

Half wave voltage multipliers can provide what degree of voltage multiplication?

PMC Practice 4
Physics
Alternating Current
Elimination Tool:

To convert the Si crystal into a P. type semi-conductor, which group element be Doped?

NUMS 2016
Physics
Physics of Solids
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:

The Bohr’s postulate for stationary orbits of Hydrogen atoms _____. Here m is the mass of the electron, v velocity, r orbital, and h is Planck’s constant.

NTS 2019
Physics
Dawn of Modern Physics
Elimination Tool:

Which of the following series lies in the ultraviolet range:

PMC 2020
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

In interference energy destroyed

The ratio of tensile strength to tensile strain is called:

UHS 2012
Physics
Physics of Solids
Elimination Tool:

A lithium nucleus contains 3 protons and 4 neutrons. What is its atomic number?

NUMS 2017
Physics
Nuclear Physics
Elimination Tool:

The electron shows purely a ____ when free.

PMC Sample 2
Physics
Dawn of Modern Physics
Elimination Tool:

In S.H.M the K.E. at the equilibrium position is:

NUMS 2018
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

In a half wave rectifier, the diode conducts during:

NUMS 2019 Reconduct
Physics
Alternating Current
Elimination Tool:

The energy stored in the capacitor is written as:

NUMS 2019 Cancelled
Physics
Electrostatics
Elimination Tool:

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

There are leptons

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:

An alpha particle is ejected from the nucleus of an atom. Which of the following answers describes the change in the nucleus of the atom?

NUMS Mock 3
Physics
Nuclear Physics

Which of the following statements is correct:

UHS 2011
Physics
Physics of Solids
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:

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:

Which of the following changes, when particle Is moving with uniform velocity?

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:

If length of a pendulum is 4 times g,.its time period will be:

If a pendulum is oscillating with a frequency f then what is the frequency at which it’s K.E. changes?

NUMS Mock 2
Physics
Oscillations and Simple Harmonic Motion

Electric conduction is high in:

NUMS 2016
Physics
Physics of Solids
Elimination Tool:

In a coil, when current changes from 10 A to 4 A in 1 s. An induced emf of 1.2 V is induced across the coil. The self – inductance of the coil is:

NUMS Mock 3
Physics
Magnetism and Electromagnetic Induction

Which of the following is not major application of electromagnetic induction

The ratio of wavelengths of the last line of Balmer series and the last line of Lyman series is:

PMC Sample 2
Physics
Atomic Spectra
Elimination Tool:

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

NTS 2012
Physics
Current Electricity
Elimination Tool:

Density of blood is:

NUMS 2016
Physics
Fluid Dynamics
Elimination Tool:

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

Ratio of Nano to Atto Is:

A wire of resistance R is bent in the form of a circle the resistance between two points on the circumference of the wire and at the end of the diameter of circle is

NUMS Mock 4
Physics
Current Electricity

The wavelength associated with an electron is of the order of:

PMC 2020
Physics
Wave Motion and Sound
Elimination Tool:

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

X-rays have frequency greater than

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

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:

The scalar product of (2i – j + 3k) . (31 + 2j – k) i?

NTS 2014
Physics
Scalars and Vectors
Elimination Tool:

If f1 and f2 are frequencies of two tuning forks, such that f1 < f2, then number of beats produced in one second are: PMC Sample 2 Physics Oscillations and Simple Harmonic Motion Elimination Tool:

The ratio of angular speed of moon around the Earth to its angular speed about its own axis is:

NUMS Mock 3
Physics
Circular Motion and Momentum

A bullet fired from gun can pierce a target due to

PMC Sample 1
Physics
Work, Power and Energy
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)

When the frequency of the applied force becomes equal to one of natural frequencies of body then the body oscillates with maximum displacement this phenomenon is called:

NUMS Mock 3
Physics
Wave Motion and Sound
Oscillations and Simple Harmonic Motion

X-rays are used to investigate:

PMC Sample 3
Physics
Dawn of Modern Physics
Elimination Tool:

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

If Compton shift is half of Compton wavelength, then the scattering angle would be:

Two vectors S and R are such that S= 4, R= 6 and S.R= 13.5. Find the angle between S and R.

NTS 2015 SMBBMC
Physics
Scalars and Vectors
Elimination Tool:

The time period of a seconds pendulum on the surface of moon becomes:

NUMS Mock 3
Physics
Oscillations and Simple Harmonic Motion

If capacitor is connected with battery and is fully charged then

Example(s) of spin motion is/are:

NTS 2011
Physics
Circular Motion and Momentum
Elimination Tool:

The young’s modulus of a given rod of uniform length ? is given by the relation:

ETEA 2018
Physics
Physics of Solids
Elimination Tool:

In photodiodes, the bias voltage is applied in ______ bias form.

NTS 2016 DUHS & JSMU
Physics
Electronics
Elimination Tool:

When a charged particle is projected perpendicular to a magnetic field:

NUMS 2016
Physics
Electrostatics
Elimination Tool:

Q.125 SI Unit of current is?

Escape velocity of moon is

Impedance in RLC series circuit Is given by

Which of the following affects our eye?

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

Polarization explains light is ———

PMC Practice 8
Physics
Electromagnetic Waves
Elimination Tool:

The equation ΔU = ΔQ refers to:

NTS 2012
Physics
Heat and Thermodynamics
Elimination Tool:

The deviation of I-V graph from straight line is due to:

NUMS 2016
Physics
Current Electricity
Elimination Tool:

Joules

An alternating voltage source is connected to a resistor R, and a capacitor C, then which of the following statements about phase angle between voltage V and current I is correct?

NUMS 2019 Cancelled
Physics
Alternating Current
Elimination Tool:

The process of converting alternating current to direct current is called?

PMC Practice 14
Physics
Electronics
Elimination Tool:

An element whose atomic number is same but mass number is different is called:

NUMS Mock 4
Physics
Nuclear Physics

If the potential at a point which is 1m from a charge is 1 volt, then the potential at a point which is 2m from the same charge will be:

PMC 2020
Physics
Electrostatics
Elimination Tool:

A football, at rest on the ground, is kicked with an initial velocity of 10 m/s at a launch angle of 30°. Calculate its total flight time, assuming that air resistance is negligible.

NTS 2014
Physics
Motion in Two Dimensions
Elimination Tool:

The ratio of wavelength of last line of Balmer series and last line of lymen series is

PMC Sample 2
Physics
Atomic Spectra
Elimination Tool:

Transformer cannot step up

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

PMC Sample 2
Physics
Circular Motion and Momentum
Elimination Tool:

A machine worker placed a cylinder with a diameter of 18 cm between the plates of a hydraulic press. If he applies a 4.25 x 105N force to the cylinder, the stress on the end of the cylinder due to the applied force is A x 107Pa.

What is the value of A?

NUMS 2019 Cancelled
Physics
Heat and Thermodynamics
Elimination Tool:

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:

Length of the telescope is:

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

When semi-conductors dopped In
then they are p-type

Applications of laser is/are:

NTS 2011
Physics
Electromagnetic Waves
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:

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:

If T is to be reduced to T/3 then length of pendulum should be: a) L/9 b) In c) l./3 d) L/4

Speed and Pressure relation of a fluid is given by:

In a bridge type full-wave rectifier, if Vm is the peak voltage across the secondary coil of the transformer, the maximum voltage coming across each reverse biased diode is:

PMC Practice 5
Physics
Alternating Current
Elimination Tool:

Which of following has greatest energy

Which of the following Is not true about radioactivity?

Beta particles are the particles emitted from the _____ of an atom.

NTS 2016 SMBBMC
Physics
Nuclear Physics
Elimination Tool:

One of the following is a photoconductor :

PMC Practice 20
Physics
Physics of Solids
Elimination Tool:

The electrons in a conductor drift with a velocity of:

NUMS 2019 Reconduct
Physics
Current Electricity
Elimination Tool:

In case of half wave rectification the resistance of diode during negative half of A.C is:

UHS 2018
Physics
Alternating Current
Elimination Tool:

A D.C generator is converted in A.C generator by

If a body is placed from poles to equator, the weight of the body will