Advertisements
Advertisements
Question
Give the expression for area thermal expansion.
Advertisements
Solution
Area Expansion: For a small change in temperature ∆T the fractional change in the area `((Δ"A")/("A"_0))` of a substance is directly proportional to ∆T and it can be written as
`(Δ"A")/("A"_0) = α_"A"Δ"T"`
Therefore, `α_"A" = (Δ"A")/("A"_0Δ"T")`
APPEARS IN
RELATED QUESTIONS
Choose the correct option.
Range of temperature in a clinical thermometer, which measures the temperature of the human body, is
Choose the correct option.
If α, β and γ are coefficients of linear, area l and volume expansion of a solid then
Define specific heat capacity.
What is a thermal expansion?
Write the unit of thermal conductivity.
Discuss various modes of heat transfer.
The temperature of a uniform rod of length L having a coefficient of linear expansion αL is changed by ∆T. Calculate the new moment of inertia of the uniform rod about the axis passing through its center and perpendicular to an axis of the rod.
A man starts bicycling in the morning at a temperature around 25°C, he checked the pressure of tire which is equal to be 500 kPa. Afternoon he found that the absolute pressure in the tyre is increased to 520 kPa. By assuming the expansion of tyre is negligible, what is the temperature of tyre at afternoon?
What does the temperature of a body tell us?
Which three fundamental quantities were used to describe mechanical systems before studying heat?
