# Properties of Solids & Liquids-Surface Energy and Surface Tension (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 8 - 11 of 23

Get 1 year subscription: Access detailed explanations (illustrated with images and videos) to 2142 questions. Access all new questions we will add tracking exam-pattern and syllabus changes. View Sample Explanation or View Features.

Rs. 550.00 or

## Question number: 8

» Properties of Solids & Liquids » Surface Energy and Surface Tension

MCQ▾

### Question

A solid sphere of density n ( > 1) times lighter than water is suspended in a water tank by a string tied to its base as shown in fig. If the mass of the sphere is m then the tension in the string is given by

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 9

» Properties of Solids & Liquids » Surface Energy and Surface Tension

MCQ▾

### Question

A thin metal disc of radius r floats on water surface and bends the surface downwards along the perimeter making an angle 9 with vertical edge of the disc. If the disc displaces a weight of water W and surface tension of water is T, then the weight of metal disc is

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 10

» Properties of Solids & Liquids » Surface Energy and Surface Tension

MCQ▾

### Question

The amount of work done in blowing a soap bubble such that its diameter increases from d to D is (T = surface tension of the solution)

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 11

» Properties of Solids & Liquids » Surface Energy and Surface Tension

MCQ▾

### Question

Two soap bubbles of radii r 1 and r 2 equal to 2.5 cm and 3.9 cm are touching each other over a common surface S 1 S 2. Its radius will be

### Choices

Choice (4) Response

a.

6.96 cm

b.

4.45 cm

c.

6.90 cm

d.

4.20 cm

f Page