Q8. A small soap bubble of radius 4cm is trapped inside another bubble of radius 6cm without any contact. Let P2 be the pressure inside the inner bubble and P0 , the pressure outside the outer bubble. Radius of another bubble with pressure difference P2 โP0 between its inside and outside would be: (1) 2 .4 cm (2) 12 cm (3) 4 .8 cm (4) 6 cm
What This Question Tests
The problem applies the concept of excess pressure inside a soap bubble due to surface tension. It involves calculating pressures in nested bubbles and then determining the radius of a single bubble with a specific pressure difference.
Concepts Tested
Formulas Used
ฮP = 4T/R
๐ NCERT Sections This Tests
2.4 โ A Spherical Conductor Of Radius 12 Cm Has A Charge Of 1.6 ร 10โ7C
Physics Class 11 ยท Chapter 2
2.4 A spherical conductor of radius 12 cm has a charge of 1.6 ร 10โ7C distributed uniformly on its surface. What is the electric field (a) inside the sphere (b) just outside the sphere (c) at a point 18 cm from the centre of the sphere?
2.1 โ Two Charges 5 ร 10โ8 C And โ3 ร 10โ8 C Are Located 16 Cm Apart. At
Physics Class 11 ยท Chapter 2
2.1 Two charges 5 ร 10โ8 C and โ3 ร 10โ8 C are located 16 cm apart. At what point(s) on the line joining the two charges is the electric potential zero? Take the potential at infinity to be zero.
2.5 โ A Parallel Plate Capacitor With Air Between The Plates Has A
Physics Class 11 ยท Chapter 2
2.5 A parallel plate capacitor with air between the plates has a capacitance of 8 pF (1pF = 10โ12 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?
๐ Question Details
- Chapter
- Properties of Matter
- Topic
- Surface Tension
- Year
- 2018
- Shift
- 16 Apr Online
- Q Number
- Q8
- Type
- MCQ
- NCERT Ref
- Class 11 Physics Ch 10: Mechanical Properties of Fluids
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