A) In X only
B) In Y only
C) In both X and Y
D) In neither X nor Y
Correct Answer: A
Solution :
In water, heat is transferred by the movement of molecules from hotter to colder region through convection. In X, heat is given at the one end of the test tube so heat goes to the another end. But in Y, heat is given at the middle so all water will not heat up.
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