Question

A projectile can have the same range R for two angles of projection. If t₁ and t₂ be the time of flights in the two cases, then the product of the two time of flights is proportional to

(a) 1/R 

(b) R

(c) R² 

(d) 1/R².

Answer 1

(b) : Range is same for angles of projection q and (90 – θ)