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Physics

Physics
Sound waves cannot travel in

Hydrogen gas
Water
Glass
Vacuum

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Physics
We feel cool when we sit near the fan, this is because

Fan gives cool air.
We feel cool when air touches the body.
Air vapourises the sweat on our body.
Fan cools surrounding air.

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Physics
A radioactive substance does not undergo any change (in mass or charge) during

Beta-emission
Oxidation
Gamma-emission
Alpha-emission

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Physics
A piece of wood is held under water. The upthrust on it will be:

More than weight of the wood
Equal to the weight of the wood
Less than weight of the wood
Zero

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Physics
The colours of stars depend on their

Temperature
Radius
Atmospheric pressure
Distance

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Physics
The Law of Kepler is related with which among the following ?

Law of Conservation of energy
None
Law of Gravitation
Planetary Motion

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MORE MCQ ON Physics

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