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