Assertion :Mountain roads rarely go straight up the slope. Reason: Slope of mountains are large, therefore more chances of vehicle to slip from roads.

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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Both Assertion and Reason are incorrect

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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
If roads of the mountain were to go straight up, the slope $(θ)$ would have been large, the frictional force $μ m g c o s θ$ would be small.Due to small friction,wheels or vehicle would slip. Also for going up a larger slope, a greater power shall be required.

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