Physics
Electron microscope works on which of the following principles?

Optical interference
Wave Nature of electrons
Motion of charged particle in electromagnetic fields
Faraday's law of Electromagnetic induction

ANSWER DOWNLOAD EXAMIANS APP

Physics
The earth is a

Good absorber and good radiator of heat
Good reflector of heat
Non-absorber of heat
Bad absorber and bad radiator of heat

ANSWER DOWNLOAD EXAMIANS APP