Q. 7

Fig. 13.4 shows a

Answer :

Time period is time taken by the pendulum to complete one oscillation.

one oscillation =

time taken from A to O and O to B is the same.

One oscillation = (A to C) + (C to O) + (O to B) + (O to C) + (C to A)

= (t₁ + t₂) + (t₁ + t₂) + (t₁ + t₂)+ (t₁ + t₂) = 4(t₁ + t₂)

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