Question

A small metallic spherical ball is placed little away from the centre of a large concave mirror of radius of curvature 2.5 cm. When ball released, find time period of S.H.M. (g = 10 m/s²)

• A. 3.042 s
• B. 3.142 s
• C. 3.542 s
• D. 31.42 s

Answer 1

Answer: (B)

3.142 s

Answer 2

T = 2p

= 2p$\sqrt { \frac { 2.5 \times 10 ^ { - 2 } } { 10 } }$

= 3.142 s