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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
Related Questions: - The momentum of a body is increased by 20%.The percentage increases in kinetic energy
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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
- The momentum of a body is increased by 20%.The percentage increases in kinetic energy
- A charged particle with a velocity 2×10³ ms⁻¹ passes undeflected through electric field
- A train of mass 2x 10⁵ kg has a constant speed of 20 m/s up a hill inclined
- A satellite A of mass m is at a distance r from the centre of earth. Another satellite
- Length of second pendulum is
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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