Physics
A metal ball and a rubber ball, both having the same mass, strike a wall normally with the same velocity. The rubber ball rebounds and the metal ball does not rebound. It can be concluded that

Both suffer the same change in momentum
The initial momentum of the rubber ball is greater than that of the metal ball
The rubber ball suffers greater change in momentum
The metal ball suffers greater change in momentum

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Physics
'Mirage' is an example of

Refraction of light only
Dispersion of light only
Refraction and total internal reflection of light
Total internal reflection of light only

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Physics
Energy in reflected light :

Decreases with the increase in angle of incidence
Becomes maximum for angle of incidence equal to 45°
Increases with the increase in angle
Does not depends on the angle of incidence

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