Q.

The surface tension of a liquid is 70 dyne/cm. It may be expressed in M.K.S. system as:

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a

70 N/m

b

7 x 10-2 N/m

c

7 x 102 N/m

d

7 x 103 N/m

answer is B.

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Detailed Solution

70 dyne/cm =70 ×10-5 N10-2 m =0.07 N m-1
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