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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
- The work function of sodium is 2.3 eV. The threshold wavelength of sodium will be
- In the half wave rectifier circuit operating from 50 Hz mains frequency,
- A spring balance is attched to the ceiling of lift.A man hangs his bag on the string
- If μᵥ=1.5230 and μʀ=15.145, then dispersive power of crown glass is
- A radio isotope X with a half life 1.4 x 10⁹ years decays to Y which is stable
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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