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Questions  

At two particular closest instants of time t1 and t2, the displacements of a particle performing SHM are equal. At these instants.

a
instantaneous speeds are equal.
b
instantaneous acceleration are equal.
c
phases of the motion are unequal.
d
all of the above

detailed solution

Correct option is D

At t = t1 and t = t2 the particle is at some point P where speeed is and acceleration is ω2x.The velocity vectors are oppositely directed. Therefore phases of the particle at these two instants must be different.

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