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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 layer of colourless oil spreads on water surface. White light is incident on it
- The identical cells connected in series are needed to heat a wire of length one meter
- The velocity of image when object and mirror both are moving towards each other
- The radioactivity of a certain material drops to 1/16 of the initial value in 2 hours.
- A stone falls freely under gravity. It covers distances h1, h2 and h3 in the first 5 secs
Topics: Electromagnetic Waves (28)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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