Look at the figure.

The length of wire PQ in case A is equal to the diameter of the semicircle formed by the wire CDE, in case B. One pin is attached to each wire with the help of wax as shown in the figure. Which pin will fall first?

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The pin on P in PQ will fall first

The pin on C in CDE will fall first

Both will fall at a time

None

answer is A.

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Detailed Solution

The pin on PQ will fall first.
Here, conduction is described as the movement of heat from things of greater temperature to objects of lower temperature. So, based on the given conditions, the pin on the wire in Figure "A" will fall first since heat will reach it before the pin in Figure "B".

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