A particle is projected from the ground with velocity `u` at angle `theta` with horizontal.The horizontal range,maximum height and time of flight are `R,H` and `T` respectively.Now keeping `u` as fixed, `theta` is varied from `30^(@)` to `60^(@)`.Then

Options

A. `R` will first increase.`H` will increase and `T` will decrease
B. `R` will first increase.than decrease while `H` and `T` both will increase
C. `R` will decrease while `H` and `T` will increase
D. `R` will increase while `H` and `T` will decrease

Answer

B

Explanation

`R prop sin 2 theta,H prop sin^(2) theta` and `T prop sin theta,sin 2theta` will first increase, then decrease.While `sin theta` will only increase.