A particle is moving in a circle with uniform speed,for which the projection of the particle is moving along the diametre of the circle.In the given situation, the motion of projection is

Explanation

When a particle moves in a circle with uniform speed and its motion is projected onto a diameter of the circle, the projection exhibits simple harmonic motion (SHM). This is because the projection moves back and forth along the diameter in a repetitive, oscillatory manner, characteristic of SHM. Option A is incorrect because linear motion does not describe the oscillatory nature of the projection. Option B is incorrect because rotatory motion refers to spinning rather than the oscillation seen in SHM. Option C is incorrect because circulatory motion implies a circular path, which does not apply to the projection along a straight line.