Question

(v)
Due to superheating of vapour, the cooling
effect may be increased or decreased

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Answer 1

Effect of superheating: As shown in the figure a & b the effect of superheating is to increase the refrigerating effect, but this increase in the refrigerating effect is at the cost of increase in amount of work spent to attain upper pressure limit.

Answer 2

Explanation:

heat (a liquid) under pressure above its boiling point without vaporization.