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A force of 10N is applied on a body for 3 sec and the corresponding displacement 6 m. The power of the source is
Options
(a) 20 W
(b) 25 W
(c) 40 W
(d) 50 W
Correct Answer:
20 W
Explanation:
Velocity, v = displacement / time = 6/3 = 2 m/s
.·. Power, P = Fv = 10 × 2 = 20 W
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Topics: Work Energy and Power
(94)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Magnetism of a magnet is due to
- A radiation of energy ‘E’ falls normally on a perfectly reflecting surface
- Two simple harmonic motions of angular frequency 100 and 1000 rad s⁻¹ have the same
- A source of sound of frequency 256 Hz is moving rapidly towards a wall with a velocity
- A uniform rod of length l is placed with one end in contact with the horizontal
Topics: Work Energy and Power (94)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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