A ball dropped from a height of rebounds to a height of after hitting the ground. Then, the percentage of energy lost is
Step 1: Given data
Height from which ball is dropped,
Height to which ball rebound,
Step 2: Find the potential energy, P.E
Let mass of the ball is
Potential energy at height ,
Potential energy at height ,
Step 3: Find the percentage loss in the potential energy
Loss in the potential energy,
Percentage loss in the potential energy,
Hence, option (A) is correct.