The percentage increase in the speed of transverse waves produced in a stretched string if the tension is increased by 4%, will be ______%. 

Answer (Detailed Solution Below) 2

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JEE Main 04 April 2024 Shift 1
90 Qs. 300 Marks 180 Mins

Detailed Solution

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CONCEPT:

The transverse speed of the stretched string is written as;

v = 

Here we have T as the tension of the string, μ is the mass per unit length and v is the velocity of the string.

CALCULATIONS:

Given:  = 4 %

As we know that the velocity of the string with tension T is written as;

v =  

v =     ----(1)

Let us calculate the relative change of equation (1) we have;

    -----(2)

Here we have  is constant.

Now multiplying equation (2) by 100 on both sides we have;

⇒  %

⇒  % = 2 %

Therefore percentage increase in the speed of transverse waves produced in a stretched string is 2%

Hence 2% increase in the speed of transverse waves.

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