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Frictional force

Sand is duste...

Question

Sand is dusted to the railway tracks during rainy season to:

A

make it always wet

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B

increase the friction

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C

reduce the consumption of fuel

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D

make it always dry

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Solution

The correct option is B increase the friction
Sand is dusted to the railway tracks to reduce the smoothness of the track. This results in increase of friction.

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