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

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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.

Equation

b.

Equation

c.

Equation

d.

Equation

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.

Equation

b.

Equation

c.

Equation

d.

Equation

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 thicknessEquation . 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

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