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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.
Solution:
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