Physics
Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation?

Diffraction
Polarization
Interference
Scattering

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Physics
A transformer

Is used to decrease or increase AC voltage
Converts electrical energy into mechanical energy
Converts DC to AC
Converts AC voltage to D.C. voltage

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

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 balance between incoming and outgoing radiation
It is the radiation from the earth in the form of long waves.

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