Heat TransferHard
Question
As part of an experiment to determine the latent heat of vaporisation of water, a student boils some water in a beaker using an electric heater as shown below.
The student notes two sources of error.
Error-1 : thermal energy is lost from the sides of the beaker
Error-2 : as the water is boiling, water splashes out of the beaker.
Which of the following gives the correct effect of these two errors on the calculated value for the specific latent heat ?
The student notes two sources of error.
Error-1 : thermal energy is lost from the sides of the beaker
Error-2 : as the water is boiling, water splashes out of the beaker.
Which of the following gives the correct effect of these two errors on the calculated value for the specific latent heat ?
Options
A.Error-1 : Increase
Error-2 : Decrease
Error-2 : Decrease
B.Error-1 : Increase
Error-2 : Increase
Error-2 : Increase
C.Error-1 : Decrease
Error-2 : Increase
Error-2 : Increase
D.Error-1 : Decrease
Error-2 : Decrease
Error-2 : Decrease
Solution
(i) Some energy is lost through sides of beakers
(ii) Water splasshes, so mass of water become less
(ii) Water splasshes, so mass of water become less
Create a free account to view solution
View Solution FreeMore Heat Transfer Questions
When two ends of a rod wrapped with cotton are maintained at different temperatures and after some time every point of t...A slab of stone of area 0.36 m2 and thickness 0.1 m is exposed on the lower surface to steam at100oC. A block of ice at ...A piece of metal is heated up to T absolute temperature. Temperature of outer surrounding is T0 kelvin. The heat energy ...If a liquid takes 30 sec. in cooling of 95oC to 90oC and 70 sec. in cooling of 55oC to 50oC then temp. of room is -...Two Plates of equal areas are placed in contact with each other. their thickness are 2 and 3 respectively. Temp of exter...