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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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- Rate of photoelectric emission is proportional to
- A black hole is an object whose gravitational field is so strong that even light
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Topics: Motion in Plane
(93)
Subject: Physics
(2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- The current gain of a transistor in common base configuration is 0.96.
- Rate of photoelectric emission is proportional to
- A black hole is an object whose gravitational field is so strong that even light
- The young’s modulus of steel is twice that of brass. Two wires of same length
- An ideal spring with spring constant K is hung from the ceiling and a block of mass
Topics: Motion in Plane (93)
Subject: Physics (2479)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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