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 boling 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 lalent heat?

Options

A. Error-1 = increases , Error-2 = Decrease
B. Error-1 = increases , Error-2 = increase
C. Error-1 = Decreases , Error-2 = increase
D. Error-1 = Decreases , Error-2 = Decrease

Answer

A

Explanation

(i) some energy is lost through sides of the beaker.
(ii) Water Splahes, so mass of water becomes less.