Q6. When two soap bubbles of radii a and b(b > a) coalesce, the radius of curvature of common surface is: (1) ab (2) a+b b−a ab (3) b−a (4) ab ab a+b
What This Question Tests
This question requires applying the concept of excess pressure in soap bubbles and how it relates to the radius of curvature of the common surface after coalescence.
Concepts Tested
Formulas Used
ΔP = 4T/R
📚 NCERT Sections This Tests
9.7 — Double-Convex Lenses Are To Be Manufactured From A Glass Of
Physics Class 12 · Chapter 9
9.7 Double-convex lenses are to be manufactured from a glass of refractive index 1.55, with both faces of the same radius of curvature. What is the radius of curvature required if the focal length is to be 20cm?
9.8 — A Beam Of Light Converges At A Point P. Now A Lens Is Placed In The
Physics Class 12 · Chapter 9
9.8 A beam of light converges at a point P. Now a lens is placed in the path of the convergent beam 12cm from P. At what point does the beam converge if the lens is (a) a convex lens of focal length 20cm, and (b) a concave lens of focal length 16cm?
9.4 — Figures 9.27(A) And (B) Show Refraction Of A Ray In Air Incident At 60°
Physics Class 12 · Chapter 9
9.4 Figures 9.27(a) and (b) show refraction of a ray in air incident at 60° with the normal to a glass-air and water-air interface, respectively. Predict the angle of refraction in glass when the angle of incidence in water is 45° with the normal to a water-glass interface [Fig. 9.27(c)]. FIGURE 9.27
📋 Question Details
- Chapter
- Properties of Matter
- Topic
- Surface tension
- Year
- 2021
- Shift
- 17 Mar Shift 1
- Q Number
- Q6
- Type
- MCQ
- NCERT Ref
- Class 11 Physics Ch 10: Mechanical Properties of Fluids
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