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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
- The electric field at a distance 3R / 2 from the centre of a charged conducting
- If F⃗ is the force acting on a particle having position vector r⃗ and ? ⃗ be the torque
- A charged particle enters a uniform magnetic field with a certain speed at right angles
- Initial angular velocity of a circular disc of mass M is ?￢ﾂﾁ.Then, two small spheres
- ln a surrounding medium of temperature 10⁰C a body takes 7 min for a fall
Topics: Electromagnetic Waves (28)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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