Kinematics

JEE Main level, single correct, medium

278 of 308

Question 278 of 308

A projectile can have the same range R\mathrm{R} for two angles of projection. If t1\mathrm{t}_1 and t2\mathrm{t}_2 be the times of flights in the two cases, then the product of the two time of flights is proportional to

Show answer and solution

Answer: (D) R\mathrm{R}

t1t2=2u2sin⁡2θg2=2Rg\mathrm{t}_1 \mathrm{t}_2=\frac{2 \mathrm{u}^2 \sin 2 \theta}{\mathrm{g}^2}=\frac{2 \mathrm{R}}{\mathrm{g}}

JEE Main question paper PDF

Open a shift to read the full paper on this page, or download it.

JEE Main 2025 Apr 2 Shift 1 question paper

Open Download PDF

Opening paper…

Explain it as a whiteboard videoStep-by-step, in Hinglish or English. Your first video needs no login.Solved it on paper but got it wrong?Upload a photo of your working. Mistake Doctor marks the exact line that broke.
See it move: Projectile motion simulationDrag the sliders and watch the numbers in this question change.Revise Kinematics & Projectile Motion firstFormula sheet, solved examples and the traps students fall into.

More Physics practice

JEE Main Physics practice question on Kinematics (Projectile motion), with the answer and a step-by-step solution. Scan a question from your own book or paper to get a whiteboard video.