Assertion :When an automobile while going too fast around a curve overturns, its inner wheels leave the ground first. Reason: For a safe turn the velocity of automobile should be less than the value of safe limit velocity.

If both Assertion and Reason are correct and Reason is the correct explanation of the Assertion

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If both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion

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If Assertion is true but Reason is false

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If Assertion is false but Reason is true

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Solution

The correct option is B If both Assertion and Reason are correct but Reason is not the correct explanation of the Assertion
When an automobile is going too fast around a curve, inner wheels leave the ground first as the body tends to increase the radius of curve to undergo the circular motion with the same amount of centripetal force. For a safe turn, the velocity of automobile should be less\than the value of safe limit velocity so that friction can provide enough centripetal force. However, this is not an explanation of the assertion. Hence, option B.

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Assertion (A): Steel is more elastic than rubber.

Reason (R) : Under a given deforming force, steel is deformed less than rubber.

Reason : Work function $h f_{0}$ where $f_{0}$ is the threshold frequency.

\to τ = \to r \times \to F b u t \to τ \neq \to F \times \to r .

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