# Properties of Solids & Liquids-Elastic Behavior (NEET Physics): Questions 16 - 20 of 28

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## Question number: 16

» Properties of Solids & Liquids » Elastic Behavior

MCQ▾

### Question

Length of a wire is doubled, when 20 × 10 8 N/m 2 stress is applied on it. Its Young’s modulus of elasticity in N/m 2 will be

### Choices

Choice (4) Response

a.

10 × 10 8

b.

20 × 10 10

c.

20 × 10 9

d.

20 × 10 8

## Question number: 17

» Properties of Solids & Liquids » Elastic Behavior

MCQ▾

### Question

The volume of a solid rubber ball when it is carried from the surface to the bottom of a 150 m deep lake decreases by 0.1 %. The value for bulk modulus of elasticity for rubber will be

### Choices

Choice (4) Response

a.

21 × l0 6 Pa

b.

15 × 10 -4 Pa

c.

15 × l0 8 Pa

d.

12 × l0 9 Pa

## Question number: 18

» Properties of Solids & Liquids » Elastic Behavior

MCQ▾

### Question

The force required to separate two glass plates of area 10 -2 m 2 with a film of water 0.05 mm thick between them, is (Surface tension of water is 70 × 10 -3 N/m)

### Choices

Choice (4) Response

a.

50 N

b.

14 N

c.

28 N

d.

38 AT

## Question number: 19

» Properties of Solids & Liquids » Elastic Behavior

MCQ▾

### Question

A steel wire of uniform cross-sectional area 2 mm 2 is heated up to 50°C and clamped rigidly at two ends. If the temperature of wire falls to 30° then change in tension in the wire will be, if coefficient of linear expansion of steel is 1.1 × 10 -5 °C -1 and young’s modulus of elasticity of steel is 2 × 10 -6 N/m 2.

### Choices

Choice (4) Response

a.

44 N

b.

22 N

c.

132 N

d.

88 N

## Question number: 20

» Properties of Solids & Liquids » Elastic Behavior

MCQ▾

### Question

A uniform steel wire of density 7500 kg/m 3 is 2.5 m long and weighs 15.6 x 10 -3 kg. It extends by 1.25 mm when loaded by 10 kg. Calculate the value of young’s modulus of elasticity for steel.

### Choices

Choice (4) Response

a.

2.3 × 10 11 N/m 2

b.

2.96 × 10 11 N/m 2

c.

19.6 × 10 11 N/m 2

d.

None of the above

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