# Properties of Solids & Liquids-Surface Energy and Surface Tension (NEET Physics): Questions 12 - 14 of 23

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## Question number: 12

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

MCQ▾

### Question

A film of water is formed between two straight parallel wires of length 10 cm each separated by 0.5 cm. If their separation is increased by 1 mm while still maintaining their parallelism, how much work will have to be done (Surface tension of water = 70 × 10 -2 N/m)

### Choices

Choice (4) Response

a.

2.88 × 10 -5 Joule

b.

1.44 × 10 -5 Joule

c.

7.22 × 10 -6 Joule

d.

5.76 × 10 -5 Joule

## Question number: 13

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

MCQ▾

### Question

Which graph represents the variation of surface tension with temperature over small temperature ranges for water?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 14

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

MCQ▾

### Question

Radius of a capillary tube is 2 x 10 -3 m. A liquid of weight 6.28 x 10 -4 N may remain in the capillary tube then the surface tension of liquid will be

### Choices

Choice (4) Response

a.

5 x 10 -2 N/m

b.

5 x 10 -3 N/m

c.

50 N/m

d.

5 N/m

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