Q24.A soap bubble of the radius 3 cm is formed inside another soap bubble of radius, 6 cm . The radius of an equivalent soap bubble that has the same excess pressure as inside the smaller bubble with respect to the atmospheric pressure is____ cm.
What This Question Tests
This question tests the understanding of excess pressure in soap bubbles, particularly in a nested configuration, and the ability to relate it to an equivalent single bubble.
Concepts Tested
Formulas Used
P_excess = 4T/R
๐ NCERT Sections This Tests
12.7 โ The Radius Of The Innermost Electron Orbit Of A Hydrogen Atom Is
Physics Class 12 ยท Chapter 12
12.7 The radius of the innermost electron orbit of a hydrogen atom is 5.3ร10โ11 m. What are the radii of the n = 2 and n =3 orbits?
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?
1.34 โ Vapour Pressure Of Water At 293 K Is 17.535 Mm Hg. Calculate The Vapour
Chemistry Class 11 ยท Chapter 1
1.34 Vapour pressure of water at 293 K is 17.535 mm Hg. Calculate the vapour pressure of water at 293 K when 25 g of glucose is dissolved in 450 g of water.
๐ Question Details
- Chapter
- Properties of Matter
- Topic
- Surface Tension
- Year
- 2021
- Shift
- 26 Aug Shift 1
- Q Number
- Q24
- Type
- Numerical
- NCERT Ref
- Class 11 Physics Ch 10: Properties of Matter
More from this Chapter
Q24.A cylinder of height 20 m is completely filled with water. The velocity of efflux of water (in msโ1 ) through a small hole on the side wall of the cylinder near its bottom is (1) 10 (2) 20 (3) 25.5 (4) 5
Q26.A wire suspended vertically from one of its ends is stretched by attaching a weight of 200 N to the lower end. The weight stretches the wire by 1 mm. Then the elastic energy stored in the wire is (1) 0.2 J (2) 10 J (3) 20 J (4) 0.1 J
Q17.A wire fixed at the upper end stretches by length by applying a force F. The work done in stretching is (1) F/2 (2) Fโ (3) 2 Fโ (4) Fโ/2
Q24.Spherical balls of radius R are falling in a viscous fluid of viscosity ฮท with a velocity v. The retarding viscous force acting on the spherical ball is JEE Main 2004 JEE Main Previous Year Paper (1) directly proportional to R but inversely (2) directly proportional to both radius R and proportional to v. velocity v. (3) inversely proportional to both radius R and (4) inversely proportional to R but directly velocity v. proportional to velocity v.