JEE Main 2022 Physics question
A water drop of diameter 2 cm is broken into 64 equal droplets. The surface tension of water is 0.075 N/m. In this process the gain in surface energy will be
Answer: (1)
Solution
The radius of each droplet is = r/4 (since ), with r = 1 cm. The gain in surface energy is $Δ E =
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