Physics
Absolute Zero is defined as

At which liquid Helium boils
The temperature at which all molecular motion ceases
At which the volume becomes zero
At which water boils at 298K

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Physics
Energy in reflected light :

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

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