Question

b) Level of mercury rises when the bulb of thermometer comes in contact with a hot
object.​

Answer 1

Answer:

In a mercury thermometer, the level of mercury rises when its bulb comes in contact with a hot object. What is the reason for this rise in the level of mercury? Answer: As the temperature increases, expansion of mercury takes place in the capillary tube which leads to the rise in the level of mercury in thermometer.

Answer 2

Answer:

Answer. The reason of rise level of Mercury is as mercy expand in contact with heat. When we put the mercy thermometer the bottom of the bulb in hot object the heat is transfer to the mercy and it expand and rise.