Identify the factor on which mutual inductance does not depend:

PMC Practice 3
Physics
Alternating Current
Elimination Tool:

When an Operational amplifier is used as Inverting amplifier, then angle between its output and input signal is:

NUMS 2019 Cancelled
Physics
Electronics
Elimination Tool:

Weight Is equivalent to which of the following

The values of electric intensity will ____ due to the presence of dielectric medium:

PMC 2020
Physics
Electrostatics
Elimination Tool:

v

The product of force and time is equal to:

NUMS 2020
Physics
Forces and Motion
Elimination Tool:

The objective of a microscope is a lens of

A particle moving along a circular path of radius 5m and with uniform speed 5 m/s. What will be the average acceleration when the particle completes half revolution?

Transvers waves can transfer their energy on, In

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

NUMS Mock 2
Physics
Optics, Nature of Light and Optical Instruments

When the length of simple pendulum is doubled, the ratio of its new time period to old time period is:

UHS 2019
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

If an Electromagnetic wave is plane polarized, then the direction of electric field and magnetic field will be

that the supply for the potentiometer is taken?

PMC Practice 8
Physics
Alternating Current
Elimination Tool:

In Nuclear Physics the mass defect is referred to _______.

NTS 2019
Physics
Nuclear Physics
Elimination Tool:

If length of the pendulum is halved time ‘period will be?

A capacitor and an inductor are connected to A.C. supply. If we double the frequency of A.C. supply then the effect on reactance of capacitor XC and reactance of inductor XL will be:

NUMS 2019 Cancelled
Physics
Electronics
Elimination Tool:

Momentum of a photon is?

PMC Practice 2
Physics
Dawn of Modern Physics
Elimination Tool:

When an electron jumps from outer to 5th orbit, then the spectral lines fall into region.

A car starts from rest and moves with constant acceleration. During the 4th second of its motion, it covers a distance of 21 meters. The acceleration of the car is _____ m.

NTS 2019
Physics
Motion in Two Dimensions
Elimination Tool:

A mixture of electric fields and magnetic fields is?

An electric rod of 2000 watts rating boils a certain quantity of water in 10 minutes, the heat which generated for boiling this water is:

NTS 2013
Physics
Electrostatics
Elimination Tool:

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

PMC 2020
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

The principle behind the working of cathode ray oscilloscope is:

PMC Sample 1
Physics
Electronics
Magnetism and Electromagnetic Induction
Elimination Tool:

If the potential difference between the plates of a capacitor with capacitance C is 4V, how much charge will accumulate on each of its plate?

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

NUMS Mock 3
Physics
Electrostatics

Who was awarded Nobel Prize (1921) for explanation of Photoelectric Effect?

What is angular velocity?

PMC Sample 1
Physics
Circular Motion and Momentum
Elimination Tool:

When the speed of your car is halved, by what factor does its kinetic energy decreases?

PMC 2020
Physics
Work, Power and Energy
Elimination Tool:

Two positive point charges Q1 = 16 microCoulombs and Q2 = 4 micro Coulombs are seperated in a line by a distance of 3 meters. Find the spot on the line between the charges where the electric field is zero.

NUMS 2019 Reconduct
Physics
Electrostatics
Elimination Tool:

In an astronomical telescope, the lens called eyepiece forms an image of a distant object that is:

NTS 2016 SMBBMC
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

Magnetic effect of electric current was first discovered by

The number of diodes in bridge rectifier is

PMC Sample 3
Physics
Alternating Current
Elimination Tool:

Resistivity of Silver is ohmmeter

A proton Is moving in direction of negative x-axis, what will happen to it if potential difference of V = -10x + 7 is applied across the field.

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:

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

NUMS 2016
Physics
Current Electricity
Elimination Tool:

In RLC series circuit at resonance, the A.C voltage across Resistance R, Inductance L and capacitance C are 5V, 10V and 10 V respectively. The A.C voltage applied to the circuit will be:

NUMS 2015
Physics
Alternating Current
Elimination Tool:

A 400 gram ball is tied to the end of a cord and whirled in à horizontal circle of radius 0.6 m. If the ball makes five complete revolutions in 2 s, what is the ball’s linear speed?

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

Compute the gravitational force of attraction between two balls each weighing 10 kg when placed at a distance of 1 metre apart.

NTS 2015 SMBBMC
Physics
Gravitation
Elimination Tool:

ECG records

E/m of an electron is given by the relationship.

NUMS Mock 4
Physics
Magnetism and Electromagnetic Induction

Germanium and silicon are semiconductors having crystalline structures. Both these materials have ______ valence electrons in their outermost shells.

NTS 2014
Physics
Electromagnetic Waves
Elimination Tool:

If the amplitude is 200, the intensity is 300 when the amplitude is increased to 800 then what will be the intensity?

NUMS Mock 3
Physics
Fluid Dynamics

If d is the distance of distinct vision, the magnifying power of a magnifying glass of focal length f is

Projectile must be launched at which angle with the horizontal to attain maximum range?

NTS 2011
Physics
Motion in Two Dimensions
Elimination Tool:

According to hooke’s law:

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:

The stopping potential depends on

What will be the change in potential energy if an electron moves 4.5m in the direction of an electric field of strength 325 N/C?

An ammeter reads up to 1 A. Its internal resistance is 0.81 Ω. To increase the range to 10 A, the value of the required shunt is:

NTS 2012
Physics
Current Electricity
Elimination Tool:

A Lead ball and a feather are dropped in vacuum both at the same time. Which of the following will be true:

When a 7000 N elevator moves from street level to the top of a building 300 m above the street level, what is the change in gravitational potential energy?

NTS 2016 DUHS & JSMU
Physics
Work, Power and Energy
Elimination Tool:

A car is travelling in a straight line along a highway at a constant speed of 80miles per hour for 10 seconds. Find its acceleration.

NTS 2015 SMBBMC
Physics
Forces and Motion
Elimination Tool:

A sound wave with a frequency of 343Hz travels through the air. What is its wavelength? (speed of sound through air=343 m/s)

NUMS Mock 3
Physics
Wave Motion and Sound

According to Bohr’s theory of Hydrogen atom, only those atomic orbits with radii ‘r’ and atomic shell ‘n’ around the nucleus are allowed which have the angular moments:

NTS 2016 DUHS & JSMU
Physics
Atomic Spectra
Elimination Tool:

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

A uniform wire of resistance 3 ohm is folded in such a way that it forms an equilateral triangle, then what is it’s resistance across the ends of any two vertices?

NUMS 2019 Cancelled
Physics
Current Electricity
Elimination Tool:

The centripetal acceleration is maximum when radius r is:

PMC Sample 1
Physics
Circular Motion and Momentum
Elimination Tool:

Light photons, each of energy 3.5 x 10-19J falls on the cathode of a photocell. The current through the cell is reduced to zero by taking the cathode to a potential +0.25 V relative to anode. The work function of the cathode is:

UHS 2018
Physics
Dawn of Modern Physics
Elimination Tool:

Drift velocity is of the order:

If in a circuit, 2 Ampere current is drawn from the battery in 10 minutes. How much charge will flow through the circuit in this time?

NTS 2018
Physics
Current Electricity
Elimination Tool:

A body moving on a fluid will experience:

NUMS 2016
Physics
Fluid Dynamics
Elimination Tool:

Unit of light year Is:

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

NUMS 2016
Physics
Physics of Solids
Elimination Tool:

The series limit for the Balmer series of hydrogen spectrum occurs at 3664 A. Calculate Ionization energy of hydrogen atom.

NTS 2013
Chemistry
Dawn of Modern Physics
Elimination Tool:

A mass has constant acceleration, what is true about the force applied on it?

NUMS Mock 1
Physics
Forces and Motion

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

A neutron collides with a stationary proton at rest. After collision

The binding per nucleon of deuteron (21H) and helium nucleus (42He) are 1.1 MeV and 7 MeV respectively. If two deuterons merge to form a single helium nucleus, the energy released will be:

NUMS 2019 Cancelled
Physics
Nuclear 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:

Which of the following statements is not true regarding the Newton’s third law of motion?

NUMS 2016
Physics
Forces and Motion
Elimination Tool:

Which of the following is the percentage of the original quantity of a radioactive material left after five half–lives approximately.

NUMS Mock 2
Physics
Nuclear Physics

A half-wave rectifier uses:

PMC Practice 13
Physics
Electronics
Elimination Tool:

When a potential difference is applied across the ends of a uniform wire of length l and radius r, a current I flows in the wire. If same potential difference is applied to the ends of another wire of the same material but of length 2l and radius 2r, the current in the wire is:

NUMS Mock 4
Physics
Current Electricity

If an object is placed away form ‘2f’ of a converging lens, then the image will be

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

Electric flux Is positive when

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

A thin horizontal plate of area 0.036 m2 is beneath the surface of a liquid of density 930 kg m−3. The force on one side of the plate due to the pressure of the liquid is 290 N. What is the depth of the plate beneath the surface of the liquid?

ETEA 2018
Physics
Fluid Dynamics
Elimination Tool:

If x-component of a vector is v3 and y-component is 1, then the angle made by the vectoralong x-axis is:

ETEA 2017
Physics
Scalars and Vectors
Elimination Tool:

The maximum efficiency of a half-wave rectifier is:

PMC Practice 3
Physics
Alternating Current
Elimination Tool:

The K.E. of a body of mass 2kg and momentum of 2N is:

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

A box of mass m = 6 kg slides with speed v = 4 m/s across a frictionless floor. It suddenly explodes into two pieces. One-piece, with mass m1= 2 kg moves in the same direction with speed v1= 8 m/s . Find the velocity of the second piece.

NTS 2013
Physics
Motion in Two Dimensions
Elimination Tool:

The rectifier is a device which converts?

PMC Practice 3
Physics
Alternating Current
Elimination Tool:

Vector components In space are

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:

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

NUMS 2017
Physics
Nuclear Physics
Elimination Tool:

For a proton moving in the direction of the electric field

A.C generator can be converted into D.0 generator by

In the breakdown region zener behaves like a

PMC Sample 2
Physics
Electronics
Elimination Tool: