Properties of Matter 1 Question 9
9. A pendulum made of a uniform wire of cross-sectional area has time period . When an additional mass is added to its bob, the time period changes to . If the Young’s modulus of the material of the wire is , then is equal to = gravitational acceleration
(2015 Main)
(a)
(b)
(c)
(d)
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Answer:
Correct Answer: 9. (d)
Solution:
Here,
Solving Eqs. (i) and (ii), we get