Question # 1

In 'N' type material, the minority charge carriers are.

Choose an answer

Free electrons

Holes

Protons

Mesons

Curie temperature is a point where :

Choose an answer

Diamagnetism changes to paramagnetism

Paramagnetism changes to Diamagnetism

Ferromagnetism changes to paramagnetism

Paramagnetism changes to Ferromagnetism

The minimum energy required for occurrence of pair production is:

Choose an answer

1.022eV

1.02keV

1.02Me.V

1.04MeV

An atom can reside in excited state for

Choose an answer

10^-8 second

One second

10^-10 second

More than one second

The winding of the electromagnet in motor are usually called.

Choose an answer

Magnetic coils

Field coils

Electric coils

electric o electric coils

The highest value reached by the voltage or current in one cycle is called.

Choose an answer

Peak ot peak value

Peak value

Instantaneous value

Root mean square value

The series in visible region is:

Choose an answer

Balmer series

Pfund series

Paschen series

None of above

In Compton effect the photon behaves as a.

Choose an answer

Wave

Particle

Nucleon

Both a and b

Lorentz force means the force acting on a particle, which is

Choose an answer

Magnetic force only

Electric force only

Sum of electric and magnetic force

None of these

Which of the modulus of elasticity is involved in compressing a rod to decrease its length ?

Choose an answer

Young's modulus

Bulk modulus

Modulus of elasticity

None of these

Which of the following basic force is able to provide an attraction between two neutrons:

Choose an answer

Electrostatic and nuclear b

Electrostatic and gravitational

Gravitational and strong nuclear

Only nuclear force

The name of the scientist who noted that a compass needle was deflected when placed near the current carrying conductor

Choose an answer

Henry

Faraday

Coloumb

Oersted

The capacitance of a capacitor depends upon.

Choose an answer

Thickness of plates

Charges on the plates

Voltage applied

Geometry of the capacitor

Which diode works at reverse biasing.

Choose an answer

LED

Photo voltaic cell

Photo diode

Silicon diode

In Wilson cloud chamber, if tracks are thick, straight and continuous, then particle is

Choose an answer

a-particles

ß-particles

Y-rays

All

The resonance frequency is given by:

Choose an answer

fr = 2π√LC

fr = 1/2πLC

fr = 1/ 2π√LC

f1 = 1/ 2πC√L

Induced emf in A.C. generator can be increased by

Choose an answer

Decreasing area of coil

Decreasing magnetic field

Increasing area of coil

Slowing down speed of coil

With the speed of motor, magnitude of back emf

Choose an answer

Remain same

Increase

Decrease

First increases then decreases

More Classes

Other Links

Physics ICS Part 2 Online MCQ's Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer