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Assertion The maximum height of projectile is always 25% of the maximum range.
Reason For maximum range, projectile should be projected at 90°.

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Assertion is incorrect but Reason is correct.

Both Assertion and Reason are correct and Reason is the correct explanation of Assertion.

Both Assertion and Reason are correct and Reason is not the correct explanation of Assertion.

Assertion is correct but Reason is incorrect.

answer is C.

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Detailed Solution

To obtain maximum range, angle of projection must be 45°, i.e., $θ$ = 45°.

$R_{\max} = \frac{u^{2} \sin (2 \times 45 °)}{g} = \frac{u^{2}}{g}$

$∵ H_{\max} = \frac{u^{2} \sin^{2} 45 °}{2 g} = \frac{u^{2}}{4 g} = \frac{R_{\max}}{4}$

So, H_max is 25 % of R_max

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