Assertion :A body with constant acceleration always moves along a straight line. Reason: A body with constant acceleration will speed up.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Reason is correct but assertion is incorrect

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Solution

The correct option is D Reason is correct but assertion is incorrect
In the case of uniform circular motion, the acceleration of the body is constant and is always towards the center of the circular path. Here, the body moves in a curve, not in a straight line. So, the given assertion is incorrect.

A body with constant acceleration will speed up. For example, a freely falling body has a constant acceleration $g$ . Its speed increases as it is falling down. So, the given reason is correct.

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Similar questions

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and

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(1 + \frac{P b}{R T})

Reason: The compressibility factor for

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and

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{SiO}_{2}

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Assertion (A) Rate constant determined from Arrhenius equation are fairly accurate for simple as well as complex molecules.

Reason (R) Reactant molecules undergo chemical change irrespective of their orientation during collision.

(a) Both assertion and reason are correct and the reason is correct explanation of assertion
(b) Both assertion and reason are correct, but reason does not explain assertion.
(c) Assertion is correct, but reason is incorrect
(d) Both assertion and reason are incorrect
(e) Assertion is incorrect but reason is correct.

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

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