Question

The maximum horizontal range of a projectile is 400 m. The maximum height attained by it will be

• A. 100 m
• B. 200 m
• C. 400 m
• D. 800 m

Answer 1

The correct option is A 100 m

$R_{max}=400m[when\theta ={45}^{\circ }]$
So from the Relation $R=4Hcot\theta \Rightarrow 400=4Hcot{45}^{\circ }\Rightarrow H=100m$