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A mercury drop of radius 1 cm is sprayed...

A mercury drop of radius 1 cm is sprayed into `10^(6)` drops of equal size. The energy expended in joule is (surface tension of mercury is `(460xx10^(-3)N//m)`

A

`5.7`

B

`5.7 xx 10^(-4)`

C

`0.057`

D

`5.7 xx 10^(-6)`

Text Solution

Verified by Experts

The correct Answer is:
C
dE `= 4piR^(2)T (n^(1//3)-1)`
` = 12 .56 xx 10^(-4) xx 46 xx10^(-2) xx 99 = 0.057`
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