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Physics

Physics
The frequency used in TV and radar system lies in

VHF
UHF
SHF
HF

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Physics
The least penetrating power ray is

Beta rays
None of these
Alpha rays
Gamma rays

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Physics
Who was the first scientist to discover Electrons?

Isaac Newton
Albert Einstein
J.J Thompson
J.C. Bose

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Physics
Speed of sound is maximum in which among the following?

Gases
Vaccum
Solids
Liquids

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Physics
The fuse in an electric circuit is connected in

Series with live
Parallel to neutral
Series with neutral
Parallel to live

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Physics
Heavy water is used in nuclear reactor to

Increase speed of neutron
Slow down neutron
Increase temperature
Absorb neutron

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