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Q.

A string of mass 2.5kg is under tension of 200N. The length of the stretched string is 20.0m. If the transverse jerk is struck at one end of the string, the disturbance will reach the other end in

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a

2 s 

b

0.5 s
 

c

2.5 s

d

1 s 

answer is B.

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Detailed Solution

t=d/V

t=d/T/μ

=20/2002.5×20

= 0.5 sec

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