A ball falls vertically and bounces on the ground. The following statements are about the forces acting while the ball is in contact with the ground. Which statement is correct?

NTS 2017
Physics
Forces and Motion
Elimination Tool:

Electron Volt is the unit of:

PMC Sample 1
Physics
Electrostatics
Elimination Tool:

A ballistic missile is

A body of mass 4 kg attached to a spring is displaced through 0.04 m from its equilibrium position and then released. If the spring constant is 400 N/m, find the time period of the vibration?

NTS 2016 DUHS & JSMU
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

At least how many diodes are required to covert A.0 fully into D.C?

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

NUMS Mock 2
Physics
Dawn of Modern Physics

Which of the following series lies in the ultraviolet range:

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

Find the longest wavelength in the Paschen series, given R = 1.097 x 107m-1.

NUMS 2019 Reconduct
Physics
Atomic Spectra
Elimination Tool:

What is the dimension of magnetic field

Which of the following has highest ionizing power and least penetrating power?

Human body emits which of the following radiation?

The AC generator is similar to:

PMC 2021 Tested
Physics
Alternating Current
Elimination Tool:

The efficiency of the carnot’s Engine Working between 150°C and 50°C is:

NTS 2011
Physics
Heat and Thermodynamics
Elimination Tool:

(1, 1, 1) • (2, 2, 2) =

The centripetal acceleration formula is given as:

PMC Sample 1
Physics
Circular Motion and Momentum
Elimination Tool:

If a car moves from 15 m/s to 5 m/s in 10 sec then average acceleration is

PMC Sample 3
Physics
Motion in Two Dimensions
Elimination Tool:

If the medium is changed from air to diamond what would be the effect in potential difference of a capacitor?

Ratio of Nano to Atto Is:

When the dimensions of both sides of an equation are equal, then the equation is said to be:

UHS 2011
Physics
Measurements
Elimination Tool:

The potential difference between the terminals of a battery in an open circuit is 2.2 V. When it is connected across a resistance of 5.0 Ω, the potential falls to 1.8 V. What is the internal resistance of the battery?

NTS 2015 DUHS and JSMU
Physics
Current Electricity
Elimination Tool:

If the body is rotating with uniform angular velocity, then its torque is:

NUMS 2016
Physics
Circular Motion and Momentum
Elimination Tool:

The absolute standard of rest is:

A shock wave is produced due to an earthquake which makes the buildings move in the direction of the shock wave. Which progressive wave would this be?

NUMS Mock 3
Physics
Wave Motion and Sound

A body of mass m moving with velocity v has a kinetic energy. If its velocity is increased 25%. what will be the new K.E?

_____ are such nuclei of an element that have the same mass number A, but have different charge number Z.

NUMS Mock 2
Physics
Atomic Spectra

There is no noticeable boundary between core and cladding.

The electrical signals change into light signals for transmission through optical fibre. A light pulse
represent.

If two inductors each of Inductance L are Introduced in a circuit in parallel, the equivalent Inductance will be:

Resistivity of Hg is ohmmeter

Resistance of RCL series circuit at resonance Is?

When out of phase waves meet at a point occurs:

Work done by friction force is always:

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

In heavy nuclei the number of neutrons is than protons

The phenomenon by which light travels in an optical fibres is:

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

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

A bullet fired from gun can pierce a target due to

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

According to the first law of thermodynamics, ΔU = Q + W, where ΔU Is the increase in internal energy of the system, Q is the heat transferred to the system and W is the external work done on the system.
Which of the following is NOT a correct expression?

NTS 2010
Physics
Heat and Thermodynamics
Elimination Tool:

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:

In single slit diffraction, when wavelength lameda increases:

PMC Practice 20
Physics
Electromagnetic Waves
Elimination Tool:

Third law of Newton is also called:

NUMS Mock 2
Physics
Forces and Motion

Which of the following color has maximum energy?

Alpha, Beta, and Gamma radiations are emitted from a radioactive substance:

NUMS 2017
Physics
Nuclear Physics
Elimination Tool:

If a stationary bar magnet is placed near a coil so that maximum lines of force passes through the coil, the galvanometer shows:

PMC 2020
Physics
Magnetism and Electromagnetic Induction
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:

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

NUMS 2016
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

The nature of the force of gravitation in the universe is:

NTS 2016 SMBBMC
Physics
Gravitation
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 Mock 2
Physics
Optics, Nature of Light and Optical Instruments

A vector in space has _____ dimension:

NUMS 2017
Physics
Scalars and Vectors
Elimination Tool:

The direction of induced emf is given by which of the following law?

By changing the current through the same coil, an emf is induced in it, the process is known as:

NTS 2015 SMBBMC
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Value of acceleration due to gravity on mars?

Energy of the 4th orbit in a hydrogen atom is:

PMC Sample 1
Physics
Atomic Spectra
Elimination Tool:

If a dielectric material is placed between two plates of a capacitor, the net capacitance of the capacitor:

NTS 2018
Physics
Electrostatics
Elimination Tool:

The difference between soft and hard X-rays is of:

NUMS Mock 1
Physics
Atomic Structure

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

NUMS 2016
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

A block with a mass of 0.1 kg is attached to a spring and placed on a horizontal frictionless table. The spring is stretched 20 cm when a force of 5 N is applied, the spring constant is:

NTS 2011
Physics
Forces and Motion
Elimination Tool:

A vector such as the velocity of a body undergoing uniform translational motion, which can be displaced parallel to itself and applied to any point is known as:

NTS 2010
Physics
Scalars and Vectors
Elimination Tool:

An object with an initial velocity of 4m/s moves along a straight axis under constant acceleration. Three seconds later,its velocity is 14m/s. How far did it travel during this time?

NTS 2015 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

A bomb is dropped from an airplane moving horizontally with a speed of 200 km/h. If the air resistance is negligible, the bomb will reach the ground in 5 s, the altitude of the plane approximately is: (g = 9.8 m/s2)

NTS 2016 SMBBMC
Physics
Motion in Two Dimensions
Elimination Tool:

A car is traveling with uniform acceleration along a straight road. The road has marker posts every 100 m. When the car passes one post, it has a speed of 10 m/s and when it passes the next one, its speed is 20 m/s. What is the car’s acceleration?

NTS 2017
Physics
Motion in Two Dimensions
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:

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

NUMS 2015
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

The stress-strain graph, deduced the following limits successively:

UHS 2013
Physics
Physics of Solids
Elimination Tool:

The force constant k1 and k2 of two springs are in a ratio of 5 : 4. They are stretched by the same length, if the potential energy stored in one spring is 25 J then the potential energy stored in the second spring is:

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

In SHM the kinetic energy of the body is maximum when:

UHS 2018
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

In an astronomical telescope, the distance between the objective and eyepiece is called:

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

A semiconductor photodiode is a:

NTS 2011
Physics
Electronics
Elimination Tool:

Law of conservation of momentum states that:

I. there is no external force applied to a system, then the total momentum of that system remains constant

II. if there is an external force applied to a system, then the total momentum of that system remains constant

III. if there is no external force applied to a system, then the total momentum of that system keeps changing

NTS 2011
Physics
Circular Motion and Momentum
Elimination Tool:

The acceleration is a _____.

PMC Practice 6
Physics
Scalars and Vectors
Elimination Tool:

Astronomers calculate speed of distant stars and galaxies using which of the following phenomena:

PMC 2020
Physics
Wave Motion and Sound
Elimination Tool:

A thermocouple is immersed in water at 373 K and the other in ice at 273K. The emf of the thermocouple Is 90 (μ)V for each 1 K difference in temperature between junctions, and the thermocouple resistance is 6 Ω. What current will flow in the galvanometer connected in series with an internal resistance of 30ohms?

NTS 2010
Physics
Heat and Thermodynamics
Current Electricity
Elimination Tool:

In Heisenberg Principle:

The temperature of a body at 100 °C is increased by Δ? as measured on the Celsius scale. How is this temperature change expressed on the Kelvin scale?

NTS 2013
Physics
Heat and Thermodynamics
Elimination Tool:

Centrifugal force of a body depends upon?

Impedance of a circuit Is calculated as:

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:

Dimension of power?

i.(j*k)

Confining of wave into one plane is called

The energy stored in the capacitor is written as:

NUMS Mock 2
Physics
Electrostatics

A progressive wave moving along the X axis is represented by y = [(2 π / λ – x)]. The wavelength at which the maximum particle velocity is 3 times the wave velocity is:

NUMS 2014
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

terminal velocity of a water droplet is dependent on:

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

If the temperature of diode increases the leakage current will

PMC Sample 2
Physics
Electronics
Elimination Tool:

Entropy is the measure of of a system

What is the instantaneous power dissipated through a resistor of resistance 10 ohm if it is connected to an AC source of frequency 15 Hz at 1/180 sec if peak value is 20 V?

UHS 2018
Physics
Alternating Current
Elimination Tool:

The number of revolutions In 3p1 radians

What is 1 radian in degrees approximately

PMC Sample 3
Physics
Measurements
Elimination Tool:

X Ray ______ causes damage to living tissues. As X rays are absorbed in tissues, they break molecular bonds and create reactive free radicals (such as H and OH).

NUMS 2017
Physics
Atomic Spectra
Elimination Tool:

Power of RCL circuit at resonance Is?

The current measuring part of the Avometer consists of a number of low resistors connected …

NUMS 2016
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

Which electrical quantity cannot be changed by a transformer?