question_answer

A heavy brass sphere is hung from a spiral and it executes vertical vibrations with period T. The sphere is now immersed in a non-viscous liquid with a density \[\frac{1}{10}\]th that of brass. When set into vertical vibrations with the sphere remaining inside liquid all the time, the time period will be:

A) \[\sqrt{\frac{9}{10}}\]                           

B) \[\sqrt{\frac{10}{9}}T\]

C) \[\frac{9}{10}T\]                      

D) Unchanged