JEE Main 201912 Apr, Morning shiftPhysicsMediumKinematics177× since 2002
A shell is fired from a fixed artillery gun with an initial speed u such that it hits the target on the ground at a
distance R from it. If t₁ and t₂ are the values of the time taken by it to hit the target in two possible ways, the
product t₁t₂ is -