A spring block system undergoes SHM on a...

A spring block system undergoes SHM on a smooth horizontal surface, the block is now given some charge and a uniform horizontal electric field E is switched on as shown in Fig. As a result

the time period of oscillation will increase

the time period of oscillation will decrease

the time period of oscillation will remain unaffected

the mean position of simple harmonic motion will shift to the right

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c, d

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