Four pendulums A, B, C and D are suspended from the same elastic support as shown in figure. 
and 
are of the same length, while 
is smaller than 
and 
is larger than 
. If 
is given a transverse displacement:
A
D will vibrate with maximum amplitude
B
C will vibrate with maximum amplitude
C
will vibrate with maximum amplitude
D
All the four will oscillate with equal amplitude
Text Solution
Verified by ExpertsThe correct answer is:
B
According to the question, 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.
and hence, frequency is same.
So, amplitude of A and C will be maximum.
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