Question 5: NCERT Solutions for 12th Class Physics: Chapter 11-Dual Nature of Radiation and Matter
The energy flux of sunlight reaching the surface of the earth is 1.388 × 103. How many photons (nearly) per square metre are incident on the earth per second? Assume that the photons in the sunlight have an average wavelength of 550 nm.
Energy of each photon,
Number of photons incident on earth’s surface per second per square metre
Check the complete chapter with solutions.
NCERT Solutions for 12th Class Physics: Chapter 11-Dual Nature of Radiation and Matter