The bob of a simple pendulum performs SHM with period $T$ in air and with period $T_1^{}$ in water. Relation between $T^{} \mathrm{a}\mathrm{n}\mathrm{d}{ }^{}{T}_1^{}$ is (neglect friction due to water, density of the material of the bob is $\frac{9}{8}\times {10}^3\mathrm{ k}\mathrm{g}/{\mathrm{m}}^3,$ density of water $is\mathrm{1 }\mathrm{g}/\mathrm{c}\mathrm{c})$

• Correct answer
  A

  $T_1=3T$
• B

  $T_1=2T$
• C

  $T_1=T$
• D

  $T_1=\frac{T}{2}$

Hence, the correct answer is option: 'A'.