The mean wavelength of light from the sun is taken to be 550 nm and its mean power is 3.8 × 1026 W. The number of photons received by the human eye per second on average from sunlight is of the order of
A. 1045
B. 1042
C. 1054
D. 1051
Answer:A
The mean wavelength of light from the sun is taken to be 550 nm and its mean power is 3.8 × 1026 W. The number of photons received by the human eye per second on average from sunlight is of the order of
A. 1045 B. 1042 C. 1054 D. 1051