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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
- If angular momentum of a body is increased by 200% its kinetic energy will increase
- If the nucleus ²⁷₁₃Al has nuclear radius of about 3.6 fm
- Find out the e.m.f. produced when the current changes from 0 to 1 A in 10 sec.
- The intensity at the maximum in a Young’s double slit experiment is I₀.
- If in a L-R series circuit the power factor is 1/2 and R=100Ω, then the value of L 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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