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Question

Hair of a shaving brush cling together when the brush is removed from water due to

A
Viscosity
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B
Surface tension
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C
Friction
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D
Elasticity
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Solution

The correct option is B Surface tension
When the brush is removed from
water hairs of the brush cling
together as the water that gets
attached to the hairs tries to
minimise its surface area (in order
to reduce residual force) thus
creating tension and that this tension
is known as surface tension
option B is correct.

1104625_550666_ans_f80454fe9cd64dd3b261daf285cb80b8.jpg

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