1.

Four pendulums A,B,C and D are suspended from the samme elastic support as shown in figure. A and C are of the same length, while B is smaller than A and D is larger than A. if A is given a transverse displacement,A. D will vibrate with maximum amplitudeB. C will vibrate with maximum amplitudeC. B will vibrate with maximum amplitudeD. All the four will oscillate with equal amplitude.

Answer» Correct Answer - B
Since length of pendulums A and C is same and `T=2pisqrt((L)/(g))`, hence their time period is same and they will have same frequency of vibration. Due to it, a resonance will take place and the pendulum C will vibrate with maximum amplitude.


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