Monochromatic light of frequency 6.0 $ \times $ 1014 Hz is produced by a laser. The power emitted is 2 $ \times $ 10$-$3 W. The number of photons emitted, on the average, by the source per second is

Question

Monochromatic light of frequency 6.0 $ \times $ 10¹⁴ Hz is produced by a laser. The power emitted is 2 $ \times $ 10^$-$3 W. The number of photons emitted, on the average, by the source per second is

5 $ \times {10^{16}}$

5 $ \times {10^{17}}$

5 $ \times {10^{14}}$

5 $ \times {10^{15}}$

Solution

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