A rifle shoots a bullet with a muzzle velocity of `400 m s^-1` at a small target `400 m` away. The height above the target at which the bullet must be aimed to hit the target is `(g = 10 m s^-2)`.A. 1 mB. 5 mC. 10 mD. 0.5 m

A rifle shoots a bullet with a muzzle velocity of `400 m s^-1` at a sm

1.	A rifle shoots a bullet with a muzzle velocity of `400 m s^-1` at a small target `400 m` away. The height above the target at which the bullet must be aimed to hit the target is `(g = 10 m s^-2)`.A. 1 mB. 5 mC. 10 mD. 0.5 m
Answer» Correct Answer - B (b) Time taken by bullet to reach the target is (Distance)/(Velocity) = (Distance)/(u cos theta) [As theta is very small, `cos theta = 1`] Time = `(Distance)/(u) = (400)/(400) = 1 s` Vertical deflection of bullet is =`(1)/(2) "gt"^2 = (1)/(2) xx 10 xx (1)^2 = 5 m`.

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A rifle shoots a bullet with a muzzle velocity of `400 m s^-1` at a small target `400 m` away. The height above the target at which the bullet must be aimed to hit the target is `(g = 10 m s^-2)`.A. 1 mB. 5 mC. 10 mD. 0.5 m

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