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Light with an energy flux of 25×10⁴ Wm⁻² falls on a perfectly reflecting surface at normal incidence. If the surface area is 15 cm², the average force exerted on the surface is
Options
(a) 1.25 x10⁻⁶ N
(b) 2.50 x10⁻⁶ N
(c) 1.20 x10⁻⁶ N
(d) 3.0 x10⁻⁶ N
Correct Answer:
2.50 x10⁻⁶ N
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
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Topics: Electromagnetic Waves
(28)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- A uniform electric field and uniform magnetic field are acting along the same
- A microscope is having objective of focal length 1 cm and eye-piece of focal length 6 cm.
- An unpolarised beam of intensity I₀ falls on a polaroid. The intensity
- A body of mass (4m) is lying in x-y plane at rest. It suddenly explodes into three
- Force required to move a mass of 1kg at rest on a horizontal rough plane
Topics: Electromagnetic Waves (28)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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