Time period of a simple pendulum will be doubled if we

Time period of a simple pendulum will be doubled if we
  1. increase the length two times.
  2. decrease the length two times.
  3. decrease the length four times.
  4. increase the length four times.

Solution

Time period of a simple pendulum will be doubled if we increase the length four times $\mathrm{As}, \mathrm{T}$ is proportional to $\mathrm{sqrt}(\mathrm{L})$

Asked in: MHT CET 2020 (15 Oct Shift 2)

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