Properties Of Solids And Liquids Question 358

Question: A mercury drop of radius 1cm is sprayed into 106 drops of equal size. The energy expended in joules is (surface tension of Mercury is 460×103N/m) [EAMCET 2001]

Options:

A) 0.057

B) 5.7

C) 5.7×104

D) 5.7×106

Show Answer

Answer:

Correct Answer: A

Solution:

W=TΔA=4πR2T(n1/31)

=4×3.14×(102)2×460×103×[(106)1/31]

=0.057



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