The effictive length of a simple pendulum is the sum of the following three : length of string , radius of bob , and length of hook.
In a simple pendulum experiment , the length of the string , as measured by a meter scale , is `92.0 cm`. The radius of the bob combined with the length of the hook , as measured by a vernier callipers , is `2.15 cm`. The effictive length of the pendulum is

Options

A. 94.1cm
B. 94.2cm
C. 94.15cm
D. 94cm

Answer

B

Explanation

`92.0+2.15=94.15=94.2cm`