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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 body of mass m is thrown upwards at an angle θ with the horizontal with velocity
- Two conducting spheres of radii 5 cm and 10 cm are given a charge of 15 μC each.
- Two spherical bodies of mass M and 5 M and radii R and 2 R released in free space
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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 body of mass m is thrown upwards at an angle θ with the horizontal with velocity
- Two conducting spheres of radii 5 cm and 10 cm are given a charge of 15 μC each.
- Two spherical bodies of mass M and 5 M and radii R and 2 R released in free space
- An electric dipole of moment ‘p’ is placed in an elecatric field of intensity ‘E’
- The magnifying power of the astronomical telescope for normal adjustment is 50.
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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