Properties of Solids & Liquids-Stress-Strain Relationship (AIIMS Physics): Questions 1 - 3 of 3

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Question number: 1

» Properties of Solids & Liquids » Stress-Strain Relationship

Appeared in Year: 2002

Assertion-Reason▾

Assertion (Ꭺ)

Stress is the internal force per unit area of a body

Reason (Ꭱ)

Rubber is more elastic than steel

Choices

Choice (4) Response

a.

Both Ꭺ and Ꭱ are true and Ꭱ is the correct explanation of Ꭺ

b.

Ꭺ is true but Ꭱ is false

c.

Both Ꭺ and Ꭱ are false

d.

Ꭺ is false but Ꭱ is true

Question number: 2

» Properties of Solids & Liquids » Stress-Strain Relationship

MCQ▾

Question

A metal wire of cross – sectional area 7×106m2 is held taut at 350C between two rigid supports with negligible tension in it. Find the tension developed in the wire if it is cooled to 250C .

(Given α of metal =2×105K1 and Y=1×1011Nm2 )

Choices

Choice (4) Response

a.

900 N

b.

700 N

c.

760 N

d.

840 N

Question number: 3

» Properties of Solids & Liquids » Stress-Strain Relationship

MCQ▾

Question

A breaking strength of a wire of diameter 6mm is 3×106N . Find the breaking strength of another wire of the same material having diameter 3mm .

Choices

Choice (4) Response

a.

3×105N

b.

5×105N

c.

3.5×105N

d.

7.5×105N

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