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Physics

Physics
The energy of a photon varies directly with its

Speed
Frequency
Wave length
None of these

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Physics
Two stones of different masses are dropped simultaneously from the top of a building

Larger stone reaches the ground earlier
Smaller stone reaches the ground earlier
Depends on the composition of the stone
Both the stones reach the ground at the same time

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Physics
Charles's law is based on

Liquid
Solid
Gas
None of these

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Physics
When heated from 0 to 100oC volume of a given mass of water will :

Decrease and then will increase
Increase gradually
Decrease gradually
Increase and then will decrease

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Physics
Fiber optics cable used in communication, works on the principle of

Total internal reflection of light
Diffuse reflection of light
Regular reflection of light
Refraction of light

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Physics
A rubber ball is dropped from a height of 2 metres. To what height will it rise if there is no loss of energy/velocity after rebounding ?

2 metres
4 metres
1 metre
3 metres

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