Question

Sun gives light at the rate of 1400Wm-2 of the area perpendicular to the direction of the light.
Assume λ(sunlight)=6000 Å . Calculate the number of protons/sec arriving at 1m2 area at that part of the earth

• A. 1.22 x1023
• B. 4.22x 1021
• C. 2.00 x1021
• D. 7.83 x1023

Answer 1

Answer: (B)

4.22x 1021

Answer 2

The correct option is (B): 4.22x 1021