Explain me these numericals.please explain me these nu!ericals on a paper.

Explain me these numericals.please explain me these nu!ericals on a paper. A pendulum completes 40 oscillations in nunute. Eind its (a) frequency. (b) urne period u Ans. (a) 0M s-l (b) 1-5 s time period of a simple pendulum is 2 s. What is its frequency ? What name is given to such a pendulum ? 06 so, seconds' pendulum A seconds' pendulum is taken to a place where acceleranon due to gravity falls to one-fourth. How is the time period of the pendulum affected. if at all ? Give reason. What will be Its new ume period ? Ans. The time increases (it is doubled) because T -C Its new time period will be 4 s.