Properties of Solids & Liquids-Thermal Expansion (KVPY Stream-SA (Class 11) Physics): Questions 1 - 2 of 2

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Question number: 1

» Properties of Solids & Liquids » Thermal Expansion

Appeared in Year: 2012

MCQ▾

Question

A circular metallic ring of radius R has a small gap of width d. The coefficient of thermal expansion of the metal is α in appropriate units. If we increase the temperature of the ring by an amount ΔT, then width of the gap:

Choices

Choice (4) Response

a.

will decrease by an amount dαΔT

b.

will not change

c.

will increase by an amount (2πR – d) αΔT

d.

will increase by an amount dαΔT

Question number: 2

» Properties of Solids & Liquids » Thermal Expansion

MCQ▾

Question

What is actual meaning of coefficient of superficial expansion?

Choices

Choice (4) Response

a.

Coefficient of total expansion due to change in pressure

b.

The total expansion of area due to change in temperature

c.

The fractional change in area per unit rise of temperature

d.

All of the above

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