Four pendulums A, B, C and D are suspended from the same

elastic support as shown in Fig. 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 amplitude.
(b) C will vibrate with maximum amplitude.
(c) B will vibrate with maximum amplitude.
(d) All the four will oscillate with equal amplitude.
Four pendulums A, B, C and D are suspended from the same

elastic support as shown in Fig. 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 amplitude.
(b) C will vibrate with maximum amplitude.
(c) B will vibrate with maximum amplitude.
(d) All the four will oscillate with equal amplitude.
This is a multiple choice answer as classified in NCERT Exemplar
(b) A is given a transverse displacement. Through the elastic support the disturbance is transferred to all the pendulums.

A and C are having same length hence they will be in resonance, because their time period of oscillation.
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Physics NCERT Exemplar Solutions Class 11th Chapter Fourteen 2025
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