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A particle is moving in a circle with uniform speed v. In moving from a point to another diametrically opposite point
Options
(a) The momentum changes by mv
(b) The momentum changes by 2mv
(c) The kinetic energy changes by 1/2 mv²
(d) The kinetic energy changes by mv²
Correct Answer:
The momentum changes by 2mv
Explanation:
The diametrically opposite points, the velocities have same magnitude but opposite directions. Therefore, change in momentum is MV – (- MV) = 2MV.
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- An electric charge 10⁻³ μC is placed at the origin (0,0) of X-Y co-ordinate system.
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Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Astigmatism is corrected by using
- An electric charge 10⁻³ μC is placed at the origin (0,0) of X-Y co-ordinate system.
- All components of the electromagnetic spectrum in vacuum have the same
- From a disc of radius R, a concentric circular portion of radius r is cut-out so
- Potential at a point x-distance from the centre inside the conducting sphere
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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