Physics

Problem

Monochromatic light of frequency

6 \times 10^{14}

Hz is produced by a laser. The power emitted is

2 \times 10^{-3}

W. How many photons per second on an average, are emitted by the source? [Feb. 1, 2024 (II)] (Given

h = 6.63 \times 10^{-34}

Js) (a)

5 \times 10^{15}

(b)

7 \times 10^{16}

(c)

6 \times 10^{15}

(d)

9 \times 10^{18}