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
1.6×1018
B
1.4×1018
C
2.8×1020
D
2.1×1020
Answer
2.8×1020
Explanation
Solution
The correct option is (C): 2.8×1020.