CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Effects of Heat

Change in siz...

Question

Change in size of a substance when heat is taken away from it, is called _______

Open in App

Solution

Heat energy always flows from an object at a higher temperature to an object at a lower temperature.
The transfer of heat can cause the size of the object to increase if heat is added to it and shrink if heat is removed.
This reduction of the size of the object due to the removal of heat from it is called contraction.
Hence, Change in size of a substance when heat is taken away from it, is called contraction.

Suggest Corrections

thumbs-up

1

Similar questions

True or false?

(a) When heat is taken away from a substance it expands.

(b) The heat absorbed by a substance is not dependent upon its mass.

(c) The unit of specific heat is a °C.

(d) A bimetallic strip is used in an electric heater to keep the water temperature constant.

Q. Changing of water to ice is a physical change because
i. a new substance is formed
ii. ice is another form of water
iii. the change is reversible
iv. heat is taken away from water

(a) i, iii, iv are correct
(b) i, ii, iv are correct
(c) ii, iii, iv are correct
(d) i, ii, iii are correct

Q. Explain why, there is no rise in temperature of a substance when it undergoes a change of state though heat is supplied continuously.

Q. A certain amount of heat is required to raise the temperature of

x g

of a substance through

t_{1}^{o} C

. The same amount of heat when taken away from

y g

of water, it cools through

t_{2}^{o} C

.Therefore, the specific heat of the substance is

Q. A certain amount of heat is required to raise the temperature of x gram of a substance through

t_{1} C

. The same amount of heat when taken away from y gram of water, it cools through

t_{2} C

. Therefore, the specific heat of the substance is

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Hotness and Coldness

PHYSICS

Watch in App

explore_more_icon

Explore more

Effects of Heat

Standard VII Physics

Join BYJU'S Learning Program

CrossIcon