Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Three properties of a liquid which make it suitable to be used in a thermometer are:
(i) The substance should have a high coefficient of expansion so that it is sensitive to the smallest change in temperature
(ii) The substance should have uniform expansion all over its entire volume
(iii) The substance should have minimum specific heat so that it absorbs minimum heat from the body under measurement.
APPEARS IN
संबंधित प्रश्न
A given mass of water is cooled from 10°C to 0°C. State the volume changes you will observe. Represent these changes on a temperature-volume graph.
What do you mean by linear expansion?
One liter of mercury at 100C is heated to 300C. Find the increase in the volume of mercury. The coefficient of cubical expansion of mercury is 1.8 X 10-4 0C-1.
State the advantages and disadvantages of mercury and alcohol as thermometric liquids.
Give a scientific reason for the following:
In winter the human body covered with a blanket keeps warm.
The following figure shows a container in which a lighted candle has been kept. The container has two openings, p, and Q. Which way the smoke from an external source placed near P moves when it reaches P and leaves from Q. Give a reason for your answer.

Who am I?
Land and water get heated due to me.
If a substance is heated or cooled, the change in mass of that substance is
What is the concept of temperature?
Give reasons why –
gaps are left between railway tracks
