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Physics

Physics
Coolis tube is used to produce

Radio waves
Gama rays
X-rays
Micro waves

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Physics
Vehicles use ________ to see the objects coming from behind.

Concave mirror
Convex lens
Convex mirror
Concave lens

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Physics
The quality or tone of a musical sound produced by a stringed instrument depends on

Length of the strings in the instrument
Amplitude of vibration
Wave form of the sound
Frequency of vibration

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Physics
The angle in which a cricket ball should be hit to travel maximum horizontal distance is :

60° with horizontal
30° with horizontal
15° with horizontal
45° with horizontal

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Physics
The oldest type of energy known to man is

Wind power
Solar power
Geothermal energy
Tidal energy

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Physics
Who gave black hole theory?

Albert Einstein
Isaac Newton
Stephen Hawking
None of these

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