NEET Physics Wave Motion MCQ Question
A wave travels along a stretched string with a speed v, which depends on the tension T in the string and the mass per unit length μ. If the tension is quadrupled and the mass per unit length remains constant, how will the speed of the wave change?
It will double.
It will quadruple.
It will remain the same.
It will increase by a factor of 1.5.
Correct Answer
Detailed Explanation
The speed of a wave on a string is given by v = √(T/μ). If the tension T is quadrupled, the speed v will change by a factor of √4 = 2, hence it will double.
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