NEET UG PHYSICS MCQ: MECHANICAL PROPERTIES OF FLUIDS

1 Easy

1 of 1

Application +4 | -1

A spherical soap bubble has a radius

{r}

. The surface tension of the soap film is

T

. The energy needed to double the diameter of the bubble at the same temperature is:

View answer and explanation

Correct option: A

24 \pi r^2 {T}

Option A (

24 \pi r^2 {T}

) is correct because the energy needed is the change in surface area multiplied by the surface tension, and the surface area increases by a factor of 4 when the diameter doubles.

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