NEET2023Physics-Surface Tension

NEET 2023 Physics Energy of a Bubble MCQ Question

Type: MCQ-numerical-Medium-Class 11

The amount of energy required to form a soap bubble of radius 2 cm from a soap solution is nearly: (surface tension of soap solution = 0.03 N m⁻¹)

A

5.06×10⁻⁴ J

B

3.01×10⁻⁴ J

C

50.1×10⁻⁴ J

D

30.16×10⁻⁴ J

Correct Answer

Option A

Detailed Explanation

The energy required is 4πr2×2×surface tension4\pi r^2 \times 2 \times \text{surface tension}. For a radius of 2 cm, this gives 5.06×1045.06×10^{-4} J.

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