A parallel beam of monochromatic light of frequency 
is incident on a surface. The intensity of the beam is 
and area of the surface is 
. Find the force exerted by the light of beam on the surface is perfectly reflecting and the light beam is incident at an angle of incidence 
. (The speed of light is denoted as 
)
Text Solution
Verified by ExpertsC
When a beam strikes a surface at an angle of incidence 
radiation pressure it exerts on surface.
. [For perfectly absorbing surface]
where, 
is velocity of light.
For a perfectly reflecting surface radiation is pressure due to absorption and pressure due to reflection
Force exerted by the light beam,
Prepare Smarter with CGP Edu
Get practice questions, solutions, and test series in one place.
Write a Review
Share your experience with this question and solution.
Commentary
Send your comment, doubt, correction, or feedback to admin.
Similar Questions
Explore conceptually related problems