Period of a simple pendulum when its length changes

1. A.
   its length is doubled.
2. B.
   its length is made four times.
3. C.
   its length is made half.
4. D.
   the mass of the bob is doubled.

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1. A.
   1.22
2. B.
   1.33
3. C.
   1.44
4. D.
   1.55

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1. A.
   3 T
2. B.
   $\sqrt{3}\text{ }T$
3. C.
   $\frac{T}{\sqrt{3}}$
4. D.
   $\frac{T}{3}$

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1. A.
   $3:4$
2. B.
   $4:3$
3. C.
   $9:16$
4. D.
   $16:9$

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