Q4. Pressure inside two soap bubbles are 1. 01 and 1. 02 atmosphere, respectively. The ratio of their volumes is : (1) 4 : 1 (2) 0. 8 : 1 (3) 8 : 1 (4) 2 : 1
What This Question Tests
The problem tests the understanding of excess pressure in a soap bubble due to surface tension and how it relates to the bubble's radius, which is then used to find the ratio of their volumes.
Concepts Tested
Formulas Used
P_excess = P_inside - P_outside = 4T/R
V = (4/3)ฯRยณ
๐ NCERT Sections This Tests
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.
2.4 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?
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?
๐ Question Details
- Chapter
- Properties of Matter
- Topic
- Surface tension, Excess pressure in soap bubbles
- Year
- 2020
- Shift
- 03 Sep Shift 1
- Q Number
- Q4
- Type
- MCQ
- NCERT Ref
- Class 11 Physics Ch 10: Mechanical Properties of Fluids
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.