Physics
According to special theory of relativity the mass of a particle

Increases with increase in velocity with respect to an observer.
Decreases with increase in velocity.
Is independent of its velocity.
Decreases with decrease in velocity.

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Physics
Which of the following options correctly explains the term heat budget?

It is the balance between incoming and outgoing radiation
It is a mode of transfer of heat through matter by molecular activity.
It is the amount of heat which the surface of earth receives from the sun.
It is the radiation from the earth in the form of long waves.

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