Electromagnetic waves of frequency `6 xx 10^(12)` Hz are travelling through free space . In which region of the e.m. spectrum , the waves will lie ?

Options

A. Ultraviolet region
B. X-ray region
C. Infrared region
D. Visible region

Answer

C

Explanation

`lambda = (C)/(v) = ( 3 xx 10^(8))/(6 xx 10^(12)) = 5 xx 10^(-5)`
`therefore lambda = 500 xx 10^(-7) m i.e., lambda gt lambda_(R)`
`therefore` This lies in the infrared region .