The wrong statement is – McqOptions

MCQOPTIONS

1.	The wrong statement is
A.	Electromagnetic waves with frequencies more than the critical frequency of ionosphere cannot be used for communication using sky wave propagation.
B.	The refractive index of the ionosphere becomes very high for frequencies higher than the critical frequency.
C.	Diode lasers are used as optical sources in optical communication.
D.	Diode lasers consume more energy.
Answer» E.

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