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Q.

(A) : A drop of liquid acquires spherical shape.
(R) : Acquiring spherical shape by a liquid drop is give to its capillary action.

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a

Both (A) and (R) are correct and (R) is the correct explanation of (A)

b

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

c

(A) is True but (R) is False.

d

Both (A) and (R) are false

answer is C.

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Detailed Solution

  • The free surface of a liquid drop tries to acquire a spherical shape because a drop always tends to acquire minimum surface area for least surface tension. 
  • The liquid drop tries to pull in all the liquid on the surface inside, towards its center.
  • Liquid tends to rise (or fall) in the capillary because of surface tension.
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(A) : A drop of liquid acquires spherical shape.(R) : Acquiring spherical shape by a liquid drop is give to its capillary action.