Question

Two laboratory thermometers are marked as 'A' and 'B'. The bulb of thermometer 'A' is wrapped in a white cloth and that of thermometer 'B' in black cloth. Both the thermometers are placed in sunlight for an hour. After one hour:
Required to answer. Single choice. Immersive Reader
(1 Point)
Both the thermometers will read the same temperature.
Thermometer 'A' will show higher temperature than 'B'.
Thermometer 'B' will show higher temperature than 'A'.
None of the above is correct.

Answer 1

Answer:

thermometer bB will higher

Answer 2

Thermometer B will show higher temperature reading

Explanation:

• Thermometer B is wrapped in black cloth and black being a darker color than white, absorbs more heat radiation coming from the sun.
• Darker objects absorb more heat than light colored objects.
• Therefore mercury level in thermometer B tends to increase more as compared to that in thermometer A.
• The reason for this is that dark clothes tend to reflect lesser solar radiation, hence they reflect lesser solar heat and appear hotter.