Properties of Solids & Liquids-Application of Surface Tension (KVPY Stream SB-SX (Class 12 & 1st Year B.Sc.) Physics): Questions 1 - 3 of 3

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 268 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 200.00 or

Question number: 1

» Properties of Solids & Liquids » Application of Surface Tension

MCQ▾

Question

A air bubble is formed at the bottom of a lake. When the bubble rises to the surface, its radius increases 4 times. The depth of the lake at that spot is –

Choices

Choice (4) Response

a.

h=16dg(P0+T2r)

b.

h=15dg(P0+T2r)

c.

h=(64dgP0+15Tr)

d.

h=3dg[21P0+10Tr]

Question number: 2

» Properties of Solids & Liquids » Application of Surface Tension

MCQ▾

Question

A air bubble is formed at the bottom of a lake. When the bubble rises to the surface, its radius increases 3 times. The depth of the lake at that spot is –

Choices

Choice (4) Response

a.

h=1dg[13P0+8Tr]

b.

h=2dg[13P0+8Tr]

c.

h=2dg[13P0+9Tr]

d.

h=2dg[27P0+9Tr]

Question number: 3

» Properties of Solids & Liquids » Application of Surface Tension

MCQ▾

Question

Two circular glass plates each of radius R = 15 cm are pressed together with a liquid film of thickness d=2.5×106m . Assuming that the liquid completely wets the glass plates, compute the force normal to plates required to pull them apart. S. T. of liquid = 0.070 N/m.

Choices

Choice (4) Response

a.

3.95 N

b.

2.15 N

c.

4.25 N

d.

2.86 N

Sign In