MCQ

Share

A simple pendulum has length $'L_1\ '.$ When its amplitude is $'a\ ' \ cm,$ its energy is $'E_1\ '.$ When length is $2L_1,$ its energy is $'E_2\ '$ Amplitude is same for both the lengths The relation between $E_1$ and $E_2$ is $......$

• A
  $E_2 = E_1$​​​​​​​
• B
  $E_2 = 2E_1$​​​​​​​
• ✓
  $E _2=\frac{ E _1}{2}$
• D
  $E_2 = 4E_1$​​​​​​​