A projectile thrown with an initial speed u and angle of projection 15° to the horizontal has a range R.

A projectile thrown with an initial speed u and angle of projection 15° to the horizontal has a range R. If the same projectile is thrown at an angle of 45° to the horizontal with speed 2u, its range will be

(a) 12 R

(b) 3 R

(d) 4 R

A projectile thrown with an initial speed u and angle of projection 15° to the horizontal has a range R.

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