Physics MCQs

Physics Mcqs for Test Preparation from Basic to Advance. Physics Mcqs are from the different sections of Physics. Here you will find Mcqs of Physics and quantum physics subject from Basic to Advance. Which will help you to get higher marks in Physics subject. These Mcqs are useful for students and job seekers i.e MCAT ECAT ETEA test preparation, PPSC Test, FPSC Test, SPSC Test, KPPSC Test, BPSC Test, PTS, OTS, GTS, JTS, CTS, NTS        .

The band theory of solids explains satisfactorily the nature of_________________?

A. Electrical insulators alone
B. Electrical conductors alone
C. Electrical semi conductors alone
D. All of the above

A completely filled band is called__________________?

A. Conduction band
B. Valence band
C. Forbidden band
D. Core band

Which one has the greatest energy gap ?

A. Semi conductor
B. Conductor
C. Metals
D. Non metals

With increase in temperature the electrical conductivity of intrinsic semi conductor___________________?

A. Decreases
B. Increases
C. Remains same
D. First increases then decreases

On the basis of band theory of solids the semiconductors have _____________________?

A. A party filled valence band and totally empty conduction band
B. A completely filled valence band a totally empty conduction band and a very wide forbidden band
C. A completely filled valence band a partially filled conduction band and a narrow forbidden band
D. A partly filled valence band a totally empty conduction band and a wide forbidden band

Very weak magnetic fields are detected by___________________?

A. Squids
B. Magnetic resonance imaging (MRI)
C. Magnetometer
D. Oscilloscope

Energy needed to magnetize and demagnetize is represented by _________________?

A. Hysteresis curve
B. Hysteresis loop area
C. Hysteresis loop
D. Straight line

What is the SI unit of modulus of elasticity of substance ?

A. Nm-2
B. Jm-2
C. Nm-1
D. Being a number it has no unit.

A rubber cord of cross-sectional area 2cm2 has a length of 1m. When a tensile force of 10N is applied the length of the cord increases by 1cm. What is the youngs modulus of rubber ?

A. 2×108 Nm-2
B. 5×106 Nm-2
C. 0.5×10-6 Nm-2
D. 0.2×10-6Nm-2

A uniform steel wire of length 4m and area of cross-section 3×10-6m2 is extended by 1mm by the application of a force. If the youngs modulus of steel is 2×1011 Nm-2 the energy stored in the wire is___________________?

A. 0.025J
B. 0.50J
C. 0.75J
D. 0.100J

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