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Physics

Physics
The substance which conducts current in the solid state is

Diamond
Iodine
Graphite
Sodium chloride

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Physics
Which phenomenon is responsible for the echo of sound wave?

Refraction
Interference
Polarisation
Reflection

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Physics
Ozone layer above the surface of Earth provides a shield against

Gamma rays
Infra-red rays
Ultra-violet rays
X-rays

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Physics
Why does water tank appear shallower when viewed from the top?

Due to reflection
Due to total internal reflection
Due to refraction
Due to diffraction

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Physics
Which of the following is used for regulated electric supply ?

Tunnel diode
Zener diode
Gun diode
Junction diode

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Physics
Microphone is a device which transforms the

Light signal into sound signal
Sound signal into light signal
Current signal into sound signal
Sound signal into current signal

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