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Physics

Physics
Sound cannot pass through

Water
Steel
Vacuum
Air

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Physics
Bending of light rays in denser medium is termed as:

Refraction
Dispersion
Reflection
Deflection

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Physics
The metal used to make lightning conductors is

Copper
Aluminium
Iron
Zinc

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Physics
Quality of transmission depends upon

Both (A) and (B)
Nature of medium only
Neither A nor B
Nature of signal only

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Physics
The threshold frequency is the frequency below which :

Photo current increases with voltage
Photo current is constant
Photo current decreases with voltage
Photo electric emission is not possible

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Physics
A periscope works by the principle of

Reflection
Total internal reflection
Refraction
Diffraction

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MORE MCQ ON Physics

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