Question

10.
The wave number of radiation of wavelength 500 nm is
(A) 5 x 10-7 m (B) 2 x 10²m" (C) 2 x 10^6m​

Answer 1

(c)2×10^6m

Explanation:

wave no=1/wavelength

=1/500×10^-9

= 1×10^9÷500

=2×10^6

Answer 2

Answer:

wavenumber = 1/wavelength

= 1/500*10^-9

= 2*10^6