Electromagnetic radiations are emitted by which of the following? [ND – McqOptions

MCQOPTIONS

1.	Electromagnetic radiations are emitted by which of the following? [NDA]
A.	Only by radio and television transmitting antennas
B.	Only by bodies at temperature higher than their surroundings
C.	Only by red-hot bodies
D.	By all bodies
Answer» E.

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