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Subject :NSO    Class : Class 7

The diagram shows two identical set-ups each consisting of a container filled with water, an electric heater and a thermometer. Only the positions of the electric heater and the thermometer differ in both set-ups. Which of the following graphs represents the approximate variations of the readings of the thermometers, X and Y with time?


options are wrong.B and D are same.A and C are also same

Ans 1:

Class : Class 8
No, you should refer to the starting point of the graph.. The temperature at the beginning is also important.. So the right answer is option B

Ans 2:

Class : Class 7

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