If y-component of a force acting In y direction is 6N the x-component will be

Let X be a radioactive element having No nuclei. The time required to decay this element to one half of its initial number No is known as:

NTS 2018
Physics
Nuclear Physics
Elimination Tool:

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

PMC Practice 4
Physics
Alternating Current
Elimination Tool:

If a face acts on a body for 2 sec and its rate of change of momentum is 50, the force acting on the body is:

Photocell is similar to:

PMC Sample 2
Physics
Dawn of Modern Physics
Elimination Tool:

A circuit that adds positive or negative D.C. voltage to an input sine wave is called:

PMC Practice 4
Physics
Alternating Current
Elimination Tool:

The formula for the Paschen series for the Hydrogen spectrum is _______.

NTS 2019
Physics
Atomic Spectra
Elimination Tool:

A double convex lens acts as a diverging lens when the object is placed

The concept of work function was given by:

PMC Sample 2
Physics
Dawn of Modern Physics
Elimination Tool:

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:

The stationary waves can be set up on the string only with the frequencies of harmonic series determined by:

PMC Sample 3
Physics
Wave Motion and Sound
Elimination Tool:

Laser beam can be used to generate three dimensional objects in a process called:

NUMS Mock 1
Physics
Optics, Nature of Light and Optical Instruments

Three resistors connected in series have Individual voltages labeled V1, V2, and V3, respectively. Which of the following expresses the value of the total voltage V, taken over the three resistors
together?

Impedance in RLC series circuit Is given by

Mutual inductance has a practical role in performance of:

PMC Practice 4
Physics
Alternating Current
Elimination Tool:

Is it possible to separate north pole only from bar magnet?

NUMS Mock 4
Physics
Magnetism and Electromagnetic Induction

Moving charge produce field

A generator of e.m.f. 80 V has an internal resistance of 0.04 Ω. If its terminal voltage is 75 V, determine the current.

NTS 2013
Physics
Current Electricity
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:

When a body of weight ‘W’ is kept suspended by a string, the weight of the body pulls the string downwards, while the string pulls the body upwards with an equal force, this force is called?

NTS 2015 SMBBMC
Physics
Forces and Motion
Elimination Tool:

In modern day electrical arrangements, which of the following is connected in series with the others?

Absolute zero is equivalent to:

NUMS 2019 Cancelled
Physics
Heat and Thermodynamics
Elimination Tool:

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.

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 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:

Two glass prisms Pl and P2 are to be combined together to produce dispersion without deviation. The angle of the prisms P1 and P2 are selected as 40 and 30 respectively. If the refractive index of prism Pl is 1.54, then that of P2 will be:

NUMS 2014
Physics
Optics, Nature of Light and Optical Instruments
Elimination Tool:

The number of LED segments used in a calculator display:

NUMS 2015
Physics
Dawn of Modern Physics
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:

A 50 watt bulb is operated by 120 volts. What is the current through the bulb?

NTS 2016 SMBBMC
Physics
Current Electricity
Elimination Tool:

What will be the gravitational force of attraction between two balls each weighing 5 kg when placed at a distance of 0.33 m apart. (G = 6.673 x 10-7 Nm2/kg2)

NTS 2015 DUHS and JSMU
Physics
Gravitation
Elimination Tool:

Pa m² is the unit of

Two bodies X of mass 4kg  and Y of mass 6 kg have same linear momentum. If the kinetic energy of Y is 48 J then kinetic energy of body X is:

Which of the following is NOT a unit of energy?

PMC 2021 Tested
Physics
Work, Power & Energy
Measurements
Elimination Tool:

During the process of nuclear disintegration, when beta particle emission occurs, atomic no. of the atom changes by _____ and the mass number changes by ______.

NUMS 2018
Physics
Nuclear Physics
Elimination Tool:

To determine Young’s modulus of a material of a given wire of length ? we use:

ETEA 2018
Physics
Physics of Solids
Elimination Tool:

1 radian = _____ degrees.

NTS 2012
Physics
Circular Motion and Momentum
Elimination Tool:

If a potential difference of V appears on the plates of a capacitor with capacitance C, then energy stored will be:

Which of the following has greater wavelength than red light?

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:

Which one of the following physical quantity does not the dimension of force per unit area

ETEA 2019
Physics
Measurements
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:

If voltage is 100V current is 10A and R Is 5ohm then internal resistance?

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:

The internal energy of a system during an isothermal process:

PMC 2020
Physics
Heat and Thermodynamics
Elimination Tool:

The different magnitudes of same physical quantities are measured by comparing them to:

UHS 2018
Physics
Measurements
Elimination Tool:

If 60 capacitors each of Capacitance C are connected in series and then in parallel what is the ratio of Cs/Cp=?

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?

A cable 4 km long and of total resistance 1 Ohm carries electric current from a generator producing 100kW at 10,000 Volts. The current in amperes in the cable is:

PMC Practice 5
Physics
Electronics
Elimination Tool:

Total energy of an electron in hydrogen atom when it Jumps to higher orbit from a lower orbit Is

When a source is moving towards a stationary observer, the apparent change in frequency will be:

NUMS 2018
Physics
Wave Motion and Sound
Elimination Tool:

______ is defined as the sensation that sound produces in the ear of a listener and is clearly related to the frequency of sound. Frequency and ______ are both measured in Hertz (Hz). Thus greater the frequency the greater the _____ and lower the frequency lower the _______.

NTS 2017
Physics
Wave Motion and Sound
Elimination Tool:

Alpha rays are nuclear radiations. They are in fact same as _____ nuclei.

NUMS 2018
Physics
Nuclear Physics
Elimination Tool:

If the length of pendulum is increased 4 times, the new time period will be?

How many neutrons are released during fusion of two deuterons?

In the SI system of units, the fundamental units of length, mass, and time are ____, _____ and respectively:

NTS 2019
Physics
Measurements
Elimination Tool:

Which of the following radiation detector operates under Reverse Bias?

A current of 4.4 amperes is following in a write. How many electrons pass a given point in the wire in one second, if the charge on an electron is 1.6×10-19
Coulomb?

NTS 2011
Physics
Current Electricity
Elimination Tool:

speed of sound is greatest in

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

NUMS 2016
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

A vibrator produces 25 waves in 5 seconds. What is its time period?

The wavenumber of a photon in Brackett series is 9/400 R then electron transited from orbit with the quantum number:

PMC Sample 2
Physics
Atomic Spectra
Elimination Tool:

The velocity of a particle is related to time according to the equation

V= ct3. The dimensions of constant are _______.

NTS 2019
Physics
Measurements
Elimination Tool:

If N, m, V and c represent the number of molecules, mass of a molecule, volume of cubical container and speed of a molecule respectively then by using the method dimensions, check which of the following expressions represents the pressure (p) of a gas?

NUMS 2019 Cancelled
Physics
Heat and Thermodynamics
Elimination Tool:

The acceleration is a _____.

PMC Practice 6
Physics
Scalars and Vectors
Elimination Tool:

The motion of particle executing SUM is given by x = 0.01 sin 100 π t, where x is in meter and time is in second. The time period is

Gamma rays are attracted towards

PMC Practice 11
Physics
Electronics
Elimination Tool:

If a convex lens of large aperture fails to converge the light rays incident on it to a single point, it is said to
suffer form

The direction of current through the load resistance of a full-wave rectification circuit:

UHS 2019
Physics
Alternating Current
Elimination Tool:

Trough of a wave acts as:

NUMS 2020
Physics
Wave Motion and Sound
Elimination Tool:

The direction of the magnetic line of force depends upon:

NUMS Mock 2
Physics
Magnetism and Electromagnetic Induction

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:

In mass-spring system, which of the following does not depend on the initial displacement of the spring?

PMC Practice 4
Physics
Oscillations and Simple Harmonic Motion
Elimination Tool:

A mass of 20 kg is lifted from the floor to a height of 2m in 4.9 sec. Calculate the power in Watts.

NUMS 2019 Reconduct
Physics
Work, Power and Energy
Elimination Tool:

In a circuit, there is a current of 5 amp which is changed such that the current falls to zero in 0.1 sec. If an average e.m.f. of 200 volts is induced, the self-inductance of the circuit will be:

NTS 2012
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

The entropy of the universe always:

NUMS 2016
Physics
Heat and Thermodynamics
Elimination Tool:

A nucleus consists of 11 protons and 12 neutrons. The conventional symbol of nucleus is:

NTS 2011
Physics
Nuclear Physics
Elimination Tool:

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

NTS 2014
Physics
Scalars and Vectors
Elimination Tool:

A 4.0 m long wire is subjected to stretching force and its length increases by 40 cm. The percent elongation which the wire undergoes is:

UHS 2013
Physics
Physics of Solids
Elimination Tool:

A ship approaching a seaport at 10 km/h sends a sonic signal of frequency of 1000 Hz. What is the apparent frequency of the signal as received by a receiver on the seaport?

NUMS 2015
Physics
Wave Motion and Sound
Elimination Tool:

When photons are incident on a metal, electrons are emitted. The process is called:

NTS 2016 SMBBMC
Physics
Dawn of Modern Physics
Elimination Tool:

Capacitance increases by

A frictional piston-cylinder based enclosure contains some amount of gas at a pressure of 400k Pa. Then heat is pressure in a quasi-static process. The piston moves up slowly through a height of 10cm. lf the piston has across section area of 0.3m2,the work done by the gas in the process is:

NUMS 2014
Physics
Heat and Thermodynamics
Elimination Tool:

Power factor in an AC circuit Is?

Light signals passes through multimode graded fibre due to

Which of the following field is dependent on the path?

Four particles independently move at the same speed in a direction perpendicular to the same magnetic field. Which particle is deflected the most?

NTS 2017
Physics
Magnetism and Electromagnetic Induction
Elimination Tool:

A battery whose emf is 40 V has an internal resistance of 5 Ohms. If this battery is connected to a 15 Ohms resistor ‘R’, what will be the voltage drop across ‘R’:

NTS 2010
Physics
Current Electricity
Elimination Tool:

Time period of simple pendulum depends on