The resultant of two forces has magnitude of 20N . if one of the forces is of magnitude 20√3 N and makes an angle of 30o with the resultant then, the other forces must be of magnitude:

NTS 2015 DUHS and JSMU
Physics
Scalars and Vectors
Elimination Tool:

Two positive point charges are placed 2m apart. The electric potential at midpoint due to these two charges will be _____:

NUMS 2020
Physics
Electrostatics
Elimination Tool:

Velocity is a:

PMC Practice 3
Physics
Scalars and Vectors
Elimination Tool:

When the antinodes, in stationary waves, are passing through their equilibrium position, the energy is:

NUMS Mock 2
Physics
Wave Motion and Sound

If a wheel of radius r turns through an angle of 30°, then the distance through which any point on its rim moves is?

PMC Sample 1
Physics
Circular Motion and Momentum
Elimination Tool:

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

NUMS Mock 4
Physics
Nuclear Physics

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:

The force applied on unit area to produce any change in the volume or length of a body is called:

NUMS Mock 1
Physics
Oscillations and Simple Harmonic Motion

Which behaves as a particle as well as wave

A standing-wave pattern is formed when the length of the string is:

PMC Sample 3
Physics
Wave Motion and Sound
Elimination Tool:

Which unit is used in the measurement of Displacement?

PMC Practice 4
Physics
Scalars and Vectors
Elimination Tool:

The width of depletion region Increases due to:

A row of 25 decorative lights, connected in series, is connected to a main transformer. When the supply is switched on, the lights do not work. The owner uses a voltmeter to test the circuit. When the voltmeter is connected across the third bulb in the row, a reading of zero is obtained. Which of the following cannot be the only fault in the circuit?

NTS 2017
Physics
Current Electricity
Elimination Tool:

Full wave rectifier uses:

PMC Practice 5
Physics
Electronics
Elimination Tool:

When the force and the displacement are in the opposite directions, the work done by the force is ______.

NTS 2015 DUHS and JSMU
Physics
Forces and Motion
Elimination Tool:

A full wave rectifier is operating from 50 Hz mains. Fundamental frequency of ripple will be:

PMC Practice 1
Physics
Alternating Current
Elimination Tool:

Two convex lenses of equal focal length ‘f’ are placed in contact, the resultant focal length of the
combination is

If the temperature of diode increases the leakage current will

PMC Sample 2
Physics
Electronics
Elimination Tool:

A and B are bulbs connected in series with 40-volt battery and a bulb C is connected with 40-volt battery Glow of bulbs will be:

How many quarks neutron and proton is made up of?

If electron passes through axis of solenoid the movement will be:

NUMS 2016
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Which of the following is not a base unit in the SI system?

NTS 2016 SMBBMC
Physics
Measurements
Elimination Tool:

When frequency of applied periodic Force is equal to the natural frequency of harmonic oscillator then the _______ of oscillator _____.

NUMS 2019 Reconduct
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:

The entropy of the universe always:

NUMS Mock 3
Physics
Heat and Thermodynamics

Identify the examples of kinetic energy

A moving ball can break a glass window
A striking hammer can drive a nail
A stone thrown upward can lift itself against the force of gravity
NTS 2015 SMBBMC
Physics
Work, Power and Energy
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

If T is to be increased to 37 then length of pendulum should be increased by:

Black body emits which of the following radiations:

The time of open vibration of a simple pendulum may be decreased by:

NTS 2017
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

The distance between two consecutive nodes is:

PMC 2021 Tested
Physics
Electromagnetic Waves
Elimination Tool:

A wire has a spring constant of 5 x 104 N m-1. It is stretched by a force to extension of 1.4 mm. Calculate the strain energy stored in the wire.

UHS 2019
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

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

The stopping potential depends on

A force F = 0.12 N is applied on a spring and the spring elongates by 3 cm. The specific constant of the spring is?

NUMS 2017
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

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

NUMS 2016
Physics
Current Electricity
Elimination Tool:

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

PMC Practice 14
Physics
Electronics
Elimination Tool:

The range of wavelengths for visible light is between _______.

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

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

NUMS 2016
Physics
Heat and Thermodynamics
Elimination Tool:

Q.125 SI Unit of current is?

The frequency of applied AC is 2 kHz. Its time period will be:

PMC Practice 3
Physics
Alternating Current
Elimination Tool:

A circuit in which there is a current of 5 amp is changed so that the current falls to zero in 0.1s. If an average e.m.f of 200 volts is induced, what is the self-inductance of the circuit?

NTS 2014
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Which of the following is different for isotopes?

PMC Practice 3
Physics
Atomic Spectra
Elimination Tool:

Electric flux Is positive when

Applications of laser is/are:

NTS 2011
Physics
Electromagnetic Waves
Elimination Tool:

Ohm multiplied by farad is equivalent to:

PMC 2020
Physics
Electrostatics
Elimination Tool:

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

Two vectors A and B both have magnitude of 5N and the angle between them is 135, then magnitude of A x B will be

Black body radiations were first observed by:

The chemical properties of elements depend on ________.

NUMS 2019 Reconduct
Physics
Nuclear Physics
Elimination Tool:

If two sounds have the same wavelength in air at the same temperature, what other property must they also have in common?

Intensity
Amplitude
Frequency
NTS 2017
Physics
Wave Motion and Sound
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

Operational amplifier with an LDR is used as a:

NUMS 2019 Reconduct
Physics
Electronics
Elimination Tool:

The energy supplied by the cell to the charge carriers is derived from the conversion of:

NUMS Mock 4
Physics
Electrostatics

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

NUMS 2018
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

A body Is dropped from a height 175m, how much time will it take to reach the ground?

The half-life of Iodine Is

A mixture of electric fields and magnetic fields is?

Dimensions of linear Momentum are:

A real image formed by convex lenses is always:

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

If the direction of current in two parallel wires is In opposite direction, then the wires will:

Unit of permittivity in free space is?

Which of the following work (s) on the principle of wheatstone Bridge?

NTS 2011
Physics
Current Electricity
Elimination Tool:

A square coil of 16 cm has 200 turns and rotates in a uniform magnetic field of magnitude 0.05 T. If the peak emf is 12 V, what is the angular velocity of the coil?

NUMS 2015
Physics
Circular Motion and Momentum
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:

Minimum velocity needed to put the satellite into orbit is

The domestic electricity supply has a frequency of:

PMC 2020
Physics
Current Electricity
Elimination Tool:

The value and units of the Planck constant ‘h’ can be expressed as:

UHS 2019
Physics
Dawn of Modern Physics
Elimination Tool:

The use of a capacitor filter in a rectifier circuit gives satisfactory performance only when the load:

PMC Practice 3
Physics
Alternating Current
Elimination Tool:

A power line 8m high carries a current 100A. What is the magnetic field of wire at ground?

NUMS Mock 1
Physics
Magnetism and Electromagnetic Induction

In which of the following the pn Junction is used?

Polarization explains light is ———

PMC Practice 8
Physics
Electromagnetic Waves
Elimination Tool:

One of the following is an Ohmic device:

PMC 2020
Physics
Current Electricity
Elimination Tool:

Find the work done in moving an object along a straight line from (3,2,−1) to (2,−1,4) in a force field given by F=4i^−3j^​+2k^.

NTS 2013
Physics
Scalars and Vectors
Elimination Tool:

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

NTS 2015 DUHS and JSMU
Physics
Heat and Thermodynamics
Elimination Tool:

In the Compton Scattering experiment the X-ray wavelength change Δλ is ___________. Here h is Planck constant, m rest mass of electron and θ is angle after scattering.

NTS 2019
Physics
Dawn of Modern Physics
Elimination Tool:

What is the flux density at a point 3 cm from the long straight wire, when there is a current of 25 A in a wire: (u0= 4? x10-7)

NTS 2010
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

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:

An object is undergoing simple harmonic motion. It’s time period is T and total energy is E. The amplitude of vibration is reduced to half. What is the new time period and total energy of the system?

PMC Practice 5
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

A 5 watt LED bulb converts 80% of the power into light photons wavelength 660 nm. What is the number of photons emitted from the bulb in one second.

UHS 2018
Physics
Dawn of Modern Physics
Elimination Tool:

Unit of pressure?

The fractional change in resistance per kelvin is known as:

NUMS Mock 2
Physics
Current Electricity

Dioptre power of an concave lens of 10 cm focal length is

Final image produced by a compound microscope is

A maintenance crew is working on a section of a three-lane highway with only one lane open to traffic. This result is much slower traffic flow. The cars on this highway behave like:

NUMS 2015
Physics
Fluid Dynamics
Elimination Tool:

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

In Double Slit experiment, the fringe spacing of the diffracted rays increases when:

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

in Damping

Two bodies ‘x’ and ‘Y’ are attached to the ends of a string which passes over a pulley so that the two bodies hang vertically. If the mass of the body ‘x’ is 5 kg and that of body ‘Y’ is 4.8 kg. Find the acceleration?(g = 9.8 m/s^2)

NUMS Mock 1
Physics
Forces and Motion

Rays produced by LED are:

PMC 2021 Tested
Physics
Electromagnetic Waves
Elimination Tool:

Displacement is a:

PMC Practice 2
Physics
Scalars and Vectors
Elimination Tool:

Transistors can be used as:

PMC Practice 10
Physics
Electronics
Elimination Tool:

The lightest element which exhibits radioactivity is:

NTS 2017
Physics
Nuclear Physics
Elimination Tool:

The centripetal acceleration formula is given as:

PMC Sample 1
Physics
Circular Motion and Momentum
Elimination Tool: