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
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