Q. Time taken by an object falling from rest to cover the height of $h_{1}$ and $h_{2}$ is respectively $t_{1}$ and $t_{2}$ then the ratio of $t_{1}$ to $t_{2}$ is

A) $h_{1}:h_{2}$
B) $\sqrt{h_{1}}:\ \sqrt{h_{2}}$
C) $h_{1}:{2h}_{2}$
D) ${2h}_{1}:h_{2}$
Explanation

(b) $t = \sqrt{\frac{2h}{g}} \Rightarrow \frac{t_{1}}{t_{2}} = \sqrt{\frac{h_{1}}{h_{2}}}$

Dr. Abubacker
Reviewed by Dr. Abubacker

Physics Educator & NEET/JEE Specialist

Ph.D. in Physics with 19+ years of teaching experience.