TS EAMCET · Physics · Electromagnetic Waves
A beam of white light is incident normally on a plane surface absorbing of the light and reflecting the rest. If the incident beam carries of power, the force exerted by it on the surface is
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
Force=change in momentum per second =force due to absorption of light+force due to reflection of light 70100×Pc+230100×Pc=1.3×103×108=4.33×10-8 N
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