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 ?

4 metres
1 metre
2 metres
3 metres

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Physics
A white and smooth surface is

Bad absorber and bad reflector of heat
Bad absorber and good reflector of heat
Good absorber and good reflector of heat
Good absorber and bad reflector of heat

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