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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: - A particle of mass 1 mg has the same wavelength as an electron moving with a velocity
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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
- A particle of mass 1 mg has the same wavelength as an electron moving with a velocity
- The weight of a body on surface of earth is 12.6 N. When it is raised to a height
- A wire of one metre length carries a constant current. The wire is bent to form
- A 1kg stone at the end of 1 m long string is whirled in a vertical circle at constant speed
- A U²³⁵ reactor generates power at a rate of P producing 2×10⁸ fission per second.
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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