Advertisements
Advertisements
Question
Two iron rods – one 10 m long and the other 5 m long, are heated to the same rise in temperature. Which will expand more?
Solution
Lt – L0 ∝ L0
∴ The rod having greater length will expand more when rods are heated to the same temperature.
∴ Rod with 10 m length will expand more.
APPEARS IN
RELATED QUESTIONS
A longer rod expands ........... than a shorter rod on being heated to the same temperature.
A cubical metal solid block is heated. How will its volume change?
Give scientific reason.
An ordinary glass bottle cracks when boiling water is poured into it, but a borosil glass bottle does not.
Define the following term:
Coefficient of superficial expansion
Give reasons for the following:
Telephone wires sag in summer.
A bimetal strip is shown in the below diagram before heating. Draw a diagram to show how it bends on heating and on cooling.
Thermal expansion is always a nuisance.
Borosilicate glass do not expand much on being heated.
Explain thermal expansion with suitable examples.
