Q. A glass ball is dropped from height 10 m. If there is 20% loss of energy due to impact, then after one impact, the ball will be upto
A) 2 m
B) 4 m
C) 6 m
D) 8 m
Explanation
(d) Clearly, 80% energy is retained after impact
$\therefore\ h^{'} = \frac{80}{100} \times 10 = 8\ m$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.