Question

A rubber ball filled with water is having a small hole. This is used as the bob of a simple pendulum. Then period of such a pendulum

• A. decrease
• B. first decreases and then increases
• C. first increases and then decreases
• D. increases

Answer 1

Answer: (C)

first increases and then decreases

Answer 2

e.g. of the bob changes so length of the pendulum varies such that time period first increases and then decreases.