A pulse of light of duration 100 ns is absorbed completely by a small object initially at…
Physics · JEE Advanced · NTA Exams — Work, Energy and Power
A pulse of light of duration 100 ns is absorbed completely by a small object initially at rest. Power of the pulse is 30 mW and the speed of light is 3 × 108 ms–1. The final momentum of the object is
- 0.3 × 10–17 kg ms–1
- 1.0 × 10–17 kg ms–1
- 3.0 × 10–17 kg ms–1
- 9.0 × 10–17 kg ms–1
Answer
(C) 3.0 × 10 –17 kg ms –1
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