Q. A projectile fired with initial velocity $u$ at some angle $\theta$ has a range $R.$ If the initial velocity be doubled at the same angle off projection, then the range will be
A) $2R$
B) $R/2$
C) $R$
D) $4R$
Explanation
(d) $R = \frac{u^{2}\sin{2\theta}}{g}\ \therefore R \propto u^{2}$. If initial velocity be doubled then range will become four times
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.