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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
- When a biconvex lens of glass having refractive index 1.47 is dipped in a liquid
- A particle is dropped from a building. It takes 4 sec for the particle to reach the ground
- When a ball is thrown up vertically with velocity vₒ,it reaches a maximum height
- When ₉₀Th²²⁸ transforms to ₈₃Bi²¹², the number of emitted α and β particles
- Two particles of masses m₁ m₂ move with initial velocities u₁ and u₂
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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