JEE Mains 26-July-2022 Shift 1 Solved Paper

Section: Physics

Question : 45 of 90

Marks: +1, -0

A water drop of radius 1‌cm is broken into 729 equal droplets. If surface tension of water is 75 dyne\/ cm, then the gain in surface energy upto first decimal place will be :
(Given π=3.14 )

[26-Jul-2022-Shift-1]

8.5×10−4J
8.2×10−4J
7.5×10−4J
5.3×10−4J

Validate

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