Physics
A white and smooth surface is

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

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Physics
A man standing at the top of a tower has two spheres A and B. He drops sphere A downwards and throws sphere B horizontally at the same time. Which of the following is correct ?

Both the spheres will reach the ground simultaneously.
B will reach the ground first.
The question is incomplete because the masses of the spheres are not given.
A will reach the ground first.

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