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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: - Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons.
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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
- Calcium plate has a maximum possible radiation wavelength 400 nm to eject electrons.
- When 4 A current flows for 2 min in an electroplating experiment,
- In a discharge tube ionization of enclosed gas is produced due to collisions between
- A step-up transformer operates on a 230 V line and supplies a current of 2 A.
- A circular disc of radius R is removed from a bigger circular disc of radius 2R
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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