InterviewSolution
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InterviewSolution
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Assertion: When range of a projectile is maximum , its angle of projection may be `45^(@) or 135^(@)`. Reason: Whether `theta is 45^(@) or 135^(@)`, value of range remains the same, only the sign changes.A. If both the assertion and reason are true and reason is a true explantion of the assertion.B. If both the assertion and reason are true but the reason is not true the correct explantion of the assertion.C. If the assertion is true but reason falseD. If both the assertion and reason are false. |
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Answer» Correct Answer - a Range, `R=(u^(2)sin2 theta)/g` When `theta=45^(@), R_(max)=(u^(2))/g sin 90^(@)=(u^(2))/g` When `theta=135^(@), R_(max)=(u^(2))/g sin 270^(@)=(-u^(2))/g` Negative sign shows opposite direction. |
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