The excess pressure inside a soap bubble of radius 2 cm is 50 dyne/cm^2. The surface tension is

MHT CET 2022 Physics question

The excess pressure inside a soap bubble of radius 2 cm is 50 dyne/cm. The surface tension is

Answer: (A)

A soap bubble has two free surfaces, so the excess pressure is . Hence dyne/cm,

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Question ID VK-096949