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Question

Physics Question on Particle Nature Of Light: The Photon

Number of photons emitted by a 100 W (Js-1) yellow lamp in 1.0 s is
(λ of yellow light is 560 nm)

A

1.6×10181.6×10^{18}

B

1.4×10181.4×10^{18}

C

2.8×10202.8×10^{20}

D

2.1×10202.1×10^{20}

Answer

2.8×10202.8×10^{20}

Explanation

Solution

The correct option is (C): 2.8×10202.8×10^{20}.