Question

The value of Planck’s constant is 6.63 10^-34 Js. The velocity of light is 3 x 10⁸ ms^-1. Which value is closest to the wavelength in nanometer of a quantum of light with frequency of 8 x 10^-15 s^-1 ?

(a) 2 x 10^-25

(b) 3 x 10⁷

(c) 4 x 10¹

(d) 5 x 10^-18

Answer 1

Correct option is (c) 4 x 10¹

Given velocity of light = 3 x 10⁸ ms^-1