Sand is spread on the track covered with snow to

Reduce coefficient of friction between road and tyre

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Increase coefficient of friction between road and tyre

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Increase area of contact between road and tyre

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Decrease area of contact between road and tyre

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Solution

The correct option is A Increase coefficient of friction between road and tyre
Covering of snow laid tracks with sand increases the force of friction between the road and the wheels Therefore, chances of slipping & skidding reduce.

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