Properties of Solids & Liquids-Young's Modulus (NEET (National Eligibility cum Medical Entrance Test) Physics): Questions 6 - 10 of 13

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Question number: 6

» Properties of Solids & Liquids » Young's Modulus

MCQ▾

Question

A steel wire is 6.0 m long and 2 mm in diameter. Young’s modulus of steel is 1.96 × 10 11 N/m 2. If a mass of 30 kg is suspended from it the elongation produced will be -

Choices

Choice (4) Response

a.

127 mm

b.

2.54 mm

c.

1.27 mm

d.

1.91 mm

Question number: 7

» Properties of Solids & Liquids » Young's Modulus

MCQ▾

Question

Which of the following relations are false

(1) Equation

(2) Equation

(3) Equation

(4) Equation

Select the correct answers and mark it according to the following codes:

Choices

Choice (4) Response

a.

1 and 3 are correct

b.

1, 2 and 3 are correct

c.

2 and 4 are correct

d.

1 and 2 are correct

Question number: 8

» Properties of Solids & Liquids » Young's Modulus

MCQ▾

Question

The Young’s modulus of steel is 2 × 10 11 N/m 2 and its coefficient of linear expansion is 1.1 × 10 -5 per deg. The pressure to be applied to the ends of a steel cylinder to keep its length constant on raising its temperature by 100°C, will be -

Choices

Choice (4) Response

a.

1.8 × 10 6 N/m 2

b.

5.5 × 10 4 N/m 2

c.

2.0 × 10 11 N/m 2

d.

2.2 × 10 8 N/m 2

Question number: 9

» Properties of Solids & Liquids » Young's Modulus

MCQ▾

Question

Is longitudinal strain and Y its young’s modulus of elasticity then potential energy per unit volume will be

Choices

Choice (4) Response

a.

Equation

b.

Equation

c.

Equation

d.

Equation

Question number: 10

» Properties of Solids & Liquids » Young's Modulus

MCQ▾

Question

A stress of 2 kg/mm 2 is applied on a wire. If the modulus of elasticity of the wire is 10 10 dyne/cm 2, then the percentage increase in the length of the wire will be

Choices

Choice (4) Response

a.

0.0098

b.

0.007

c.

0.0028

d.

0.0196

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