Published by:
CGP EDU Academic Team
Published on: August 14, 2026
Calculate the number of photons emitted by a 100 W yellow lamp in 1.0 s. Take the wavelength of yellow light as 560 nm and assume 100 percent efficiency.
Text Solution
Verified by ExpertsThe correct answer is:
D
The number of photon is N = 
= 
= 
Substitution of the data gives
N = 
= 2.8 × 10 20
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