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A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that

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a
the kinetic energy of the particle changes with time
b
the acceleration of the particle is constant
c
the velocity of the particle is constant
d
the speed of the particle is constant

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detailed solution

Correct option is D

When applied force is always perpendicular to the direction of motion , path followed by the particle is circular and since acceleration is radially inward , its speed must remain constant.


Similar Questions

Statement -A : The net acceleration of a particle in circular motion is always along the radius of the circle towards the centre
Statement -B : The velocity vector of a particle at a point is always along the tangent to the path of the particle at that point


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