Answered: Light with an energy flux of 25 x 10*…

Light with an energy flux of 25 x 10* Wm-²falis on a perfectly reflecting surface at normal incidence. If the surface area is 15 cm², the average force exerted on the surface is:

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter39: Relativity

Section: Chapter Questions

Problem 59PQ

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Blackbody

Q.5 A blackbody radiates how much energy when the temperature of the body is elevated?

Question

Light with an energy flux of 25x 104 Wm-²fals on
a perfectly reflecting surface at normal incidence. If
the surface area is 15 cm², the average force exerted
on the surface is:
(1) 1.25x 10-6N
2.50 x 10-6 N
(2
(3) 1.20x 10-6N
(4) 3.0x 10-6 N

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