A soap bubble, having radius of 1 mm, is blown from a detergent solution having a surface tension of 2.5×10^-2 N/m. The pressure inside the bubble equals at a point Z0 below the free surface of water in a container. Taking g = 10 m/s², density of water = 10^3 kg/m³, the value of Z0 is :

NEET UG 2019 · Physics · Question 7

NEET 2019 Physics, question 7

Question 7 of the NEET 2019 paper (code P1) is a Physics question from Mechanical Properties of Fluids. Its idea, Excess Pressure in Bubbles, was asked twice, in 2019 and 2022, across NEET 2017–2026. The NTA final answer key gives option 3.

Updated 2026-10-08

Q7 · Physics

2.5\times10^{-2}

1 100 cm 2 10 cm 3 1 cm Official answer 4 0.5 cm

Official answer: option 3 · NTA final answer key

Same idea

Excess Pressure in Bubbles, in other papers

NEET asked this idea twice, in 2019 and 2022. The other question below.

2022 Q 4 If a soap bubble expands, the pressure inside the bubble : One-line MCQ \cdot Easy

Excess Pressure in Bubbles: every question and how it was framed

The chapter

Mechanical Properties of Fluids in ten years of NEET

15 questions from 2017–2026, asked in 10 of 10 papers, about 1.4 a paper. Surface Tension alone had 6.

Chapter analysis Study this chapter Practise this chapter

Excess Pressure in Bubbles, in other papers

Mechanical Properties of Fluids in ten years of NEET

Mechanical Properties of Fluids: questions per paper