Properties of Solids & Liquids-Stress-Strain Relationship (NEET Physics): Questions 1 - 6 of 8

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Question number: 1

» Properties of Solids & Liquids » Stress-Strain Relationship

MCQ▾

Question

A wire of length lm is stretched by a force of 10 N. The area of cross-section of the wire is 2 × 10 6 m 2 and Y is 2 × lO -6 N/m 2. Increase in length of the wire will be -

Choices

Choice (4) Response

a.

2.5 × 10 -5 mm

b.

2.5 × 10 -5 cm

c.

2.5 × 10 -5 m

d.

Question does not provide sufficient data or is vague

Question number: 2

» Properties of Solids & Liquids » Stress-Strain Relationship

MCQ▾

Question

A wire of length lm is stretched by a force of 15 N. The area of cross-section of the wire is 2 × 10 6 m 2 and Y is 2 × l0 -6 N/m 2. Increase in length of the wire will be -

Choices

Choice (4) Response

a.

3.75 × 10 -5 m

b.

4.45 × 10 -5 m

c.

2.25 × 10 -5 m

d.

Question does not provide sufficient data or is vague

Passage

Read the passage given below and answer the questions that follow:

A bar of cross section A is subjected to equal and opposite tensile forces F at its ends. Consider a plane through the bar making an angle θ with a plane at right angles to the bar as shown in figure.

A bar cross section with force acting on it

A Bar Cross Section With Force Acting on It

In above fig we shows that bars cross section which having equal and opposite force, making and angle θ with a plane.

Question number: 3 (1 of 1 Based on Passage) Show Passage

» Properties of Solids & Liquids » Stress-Strain Relationship

MCQ▾

Question

The tensile stress, at this plane in terms of F, A and θ is

Choices

Choice (4) Response

a.

Fsin2θA

b.

Fcos2θA

c.

FAcos2θ

d.

FAsin2θ

Question number: 4

» Properties of Solids & Liquids » Stress-Strain Relationship

MCQ▾

Question

A brass rod is to support a load of 800 N. If it’s elastic limit is 8.0xl0 8 N/m 2 its minimum diameter must be -

Choices

Choice (4) Response

a.

3.71 mm

b.

1.13 mm

c.

1.59 mm

d.

4.52 mm

Question number: 5

» Properties of Solids & Liquids » Stress-Strain Relationship

MCQ▾

Question

A copper rod 5 m long is stretched by 1 mm. Strain will be -

Choices

Choice (4) Response

a.

2 × 10 -4, longitudinal

b.

1.2 × 10 -4, volumetric

c.

2.4 × 10 -4, longitudinal

d.

1 × 10 -3, volumetric

Passage

Read the passage given below and answer the questions that follow:

A bar of cross section A is subjected to equal and opposite tensile forces F at its ends. Consider a plane through the bar making an angle θ with a plane at right angles to the bar as shown in figure.

Figure in A bar cross section with force acting on it

Figure in a Bar Cross Section With Force Acting on It

In above fig we shows that bars cross section which having equal and opposite force, making and angle θ with a plane.

Question number: 6 (1 of 2 Based on Passage) Show Passage

» Properties of Solids & Liquids » Stress-Strain Relationship

MCQ▾

Question

In the above problem, for what value of θ is the tensile stress maximum?

Choices

Choice (4) Response

a.

90°

b.

45°

c.

30°

d.

Zero

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