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For maximum range, the angle of projection is:

1. 45°
2. 30°
3. 60°
4. 90°

Correct answer: 45°

Solution

The range of a projectile is maximum when the angle of projection is 45°, as derived from the formula for range, R = (u² sin 2θ) / g, where sin 2θ is maximum at θ = 45°.

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