Question

We can change the time period of a pendulum
(a) by changing the mass of the bob
(b) by changing the length of the string
(c) by changing both the bob and the length of the pendulum
(d) None of these​

Answer 1

Answer:

None of these

Explanation:

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Answer 2

Answer:

b) by changing length of the string

Explanation:

the mass of the bob has no effect on the time period of pendulum. but the length of the string does. the longer the string, longer the time period.

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