Physics, asked by riyapatel11, 1 year ago

A perfectly reflecting mirror has an area of
1 cm². Light energy is allowed to fall on it for an
hour at the rate of 10 Wcm 2. The force that acts on
the mirror is
(a) 3.35 x10-'N (b) 6.7x10-N
(c) 3.35 x10-N (d) 6.7x10-8N​

Answers

Answered by TheHeartyQueen
3

Explanation:

The worlds two most populous ecomies have been growing at impressive rates but china has been climbing the ladder faster and laid a more solid foundation for furure development.

.......

Answered by hdthebest95
2

Answer:

Option D

Let n photons fall on mirror each having frequency ν1

energy of all photons is 1 sec is = 10 J nν

Rate of change of momentum =

2nh

v/c

(after reflection)

=

 \frac{20}{c}  \times 10

 =  \frac{20}{3 \times  {10}^{8} }  = 6.7 \times  {10}^{ - 8} n

HOPE IT'S CORRECT

HAPPY KNOWLEDGE!

Similar questions