In the below experiment, wax is used to attach drawing pins to the rods of different materials. All the rods are in contact with the boiling water. Which of the following pins is going to fall first?

Pin A

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Pin B

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Pin C

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Pin D

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Solution

The correct option is C
Pin C
Glass, plastic and ceramic are poor conductors of heat. So, they will conduct heat very slowly.

Since copper is a good conductor of heat, the copper rod conducts heat faster than others. Hence, pin attached to the copper rod will fall first.

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Question 13

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In the below experiment, wax is used to attach drawing pins to the rods of different materials. All the rods are in contact with the boiling water. Which of the following pins is going to fall first?

The correct option is C Pin CGlass, plastic and ceramic are poor conductors of heat. So, they will conduct heat very slowly. Since copper is a good conductor of heat, the copper rod conducts heat faster than others. Hence, pin attached to the copper rod will fall first.

The correct option is C
Pin C
Glass, plastic and ceramic are poor conductors of heat. So, they will conduct heat very slowly.

Since copper is a good conductor of heat, the copper rod conducts heat faster than others. Hence, pin attached to the copper rod will fall first.