Question

What are the minimum and maximum temperature is shown in the figure?

Answer 1

Hint: We need to find the maximum and minimum temperatures from the given thermometer figure. The temperature can be obtained by observing the lower point of each metal index on both sides. The one on the right side will be the maximum value and the other on the left will be the minimum.

Complete step by step answer:

We know that temperature refers to the degree of hotness and coldness. It can be measured using the maximum & minimum thermometer. The unit of temperature is usually in degree Celsius/centigrade.
The maximum-minimum thermometer contains a U-shaped glass tube filled with alcohol on both ends of the tube. When the temperature changes, the alcohol expands, and the metal index on both sides of the thermometer record the maximum and minimum temperatures.
The lower point of each metal index indicates the temperature. Hence, from the given figure, we can infer that the maximum temperature is on the right side and is ${{48}^{\circ }}C$ while the minimum temperature is on the left side and is ${{23}^{\circ }}C$. Both these are indicated in the figure below:

1 indicates the maximum temperature, 2 the minimum temperature, 3 is the current reading and 4 is the metal indices.
The current temperatures are ${{19}^{\circ }}C$ .
Hence the maximum temperature is ${{48}^{\circ }}C$ and the minimum temperature is ${{23}^{\circ }}C$.

Note:
 The maximum and minimum thermometer is often placed in a Stevenson Screen where it is kept out of direct sunlight. The center button is used to reset the maximum and minimum temperatures. It can also be done by moving a magnet from the metal indices to the bottom.