what is the reason behind decreasing the Mercury level in thermometer when placed in colder body?
Answers
Answered by
0
Its the property of mercury to go down when is cold and come up when it's hot.
Hope this helps.....
Hope this helps.....
Answered by
1
hey....
As energy flows into the thermometer the glass warms first and starts to expand and its volume increases. Because of the low thermal conductivity of the glass the mercury does not expand initially, so its volume doesn�t change initially andthe height of the mercury column actually decreases due to the larger capillary volume of the glass. Eventually the glass comes into thermal equilibrium and ceases to expand while the mercury continues to expand until it too comes into thermal equilibrium with both the glass and the body. The rate of the expansion of the mercury is determined by in part by the thermal conductivity of the glass.
###hope it help u...
As energy flows into the thermometer the glass warms first and starts to expand and its volume increases. Because of the low thermal conductivity of the glass the mercury does not expand initially, so its volume doesn�t change initially andthe height of the mercury column actually decreases due to the larger capillary volume of the glass. Eventually the glass comes into thermal equilibrium and ceases to expand while the mercury continues to expand until it too comes into thermal equilibrium with both the glass and the body. The rate of the expansion of the mercury is determined by in part by the thermal conductivity of the glass.
###hope it help u...
Similar questions