Q25.If two soap bubbles of different radii are connected by a tube, (1) air flows from the bigger bubble to the smaller (2) air flows from bigger bubble to the smaller bubble till the sizes are interchanged. bubble till the sizes are interchanged (3) air flows from the smaller bubble to the bigger. (4) there is no flow of air.
What This Question Tests
This question tests the understanding of excess pressure inside a soap bubble and its dependence on radius, which governs air flow between connected bubbles.
Concepts Tested
Formulas Used
ΔP = 4T/R
📚 NCERT Sections This Tests
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2.5 A parallel plate capacitor with air between the plates has a capacitance of 8 pF (1pF = 10–12 F). What will be the capacitance if the distance between the plates is reduced by half, and the space between them is filled with a substance of dielectric constant 6?
14.6 — Reflection Of Waves
Physics Class 12 · Chapter 14
14.6 Reflection of waves some cork pieces on the disturbed surface, it is seen that
9.3 — A Tank Is Filled With Water To A Height Of 12.5 Cm. The Apparent
Physics Class 12 · Chapter 9
9.3 A tank is filled with water to a height of 12.5 cm. The apparent depth of a needle lying at the bottom of the tank is measured by a microscope to be 9.4 cm. What is the refractive index of water? If water is replaced by a liquid of refractive index 1.63 up to the same height, by what distance would the microscope have to be moved to focus on the needle again?
📋 Question Details
- Chapter
- Properties of Matter
- Topic
- Surface Tension, Excess Pressure in bubbles
- Year
- 2004
- Shift
- Unknown
- Q Number
- Q25
- Type
- MCQ
- NCERT Ref
- Class 11 Physics Ch 10: Mechanical Properties of Fluids
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