A pulse of light of duration $100 \ ns$ is absorbed completely by a small object initially at rest. Power of the pulse is $30 \ mV$ and the speed of light is $3 \times 10 ^8\ ms ^{-1}$. The final momentum of the object is :
A pulse of light of duration $100 \ ns$ is absorbed completely by a small object initially at rest. Power of the pulse is $30 \ mV$ and the speed of light is $3 \times 10 ^8\ ms ^{-1}$. The final momentum of the object is :
- [IIT 2013]
- A
$0.3 \times 10^{-17} \ kg ms ^{-1}$
- B
$1.0 \times 10^{-17} \ kg ms ^{-1}$
- C
$3.0 \times 10^{-17} \ kg ms ^{-1}$
- D
$9.0 \times 10^{-17} \ kg ms ^{-1}$
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