Question

1.
The wavelength of an electromagnetic radiation is
400 nm. Thus, the wave number will be equal to
[NCERT Pg. 38)
(1) 2.5 x 104 cm-1 (2) 2.5 103 cm-1
(3) 2.5 * 105 cm-1 (4) 2.5 x 102 cm-1​

Answer 1

Explanation:

(1) 2.5 × 104 cm -¹ is the right answer