In the two ‘set-ups' X and Y, shown on the next page, the wires AB and PQRare made of the same material and have equal 'thickness. The length of thewire AB, (in the set-up X') is equal to the diameter (= PR) of the semi-circle,formed by the wire PQR, (in the set-up 'Y'). Pins, Pl and P2, are attached, towires AB and PQR respectively, with the help of wax. Which of the two pins,P1 or P2, will fall off later? Give reason for your answer.

In the two ‘set-ups' X and Y, shown on the next page, the wires AB a

1.	In the two ‘set-ups' X and Y, shown on the next page, the wires AB and PQRare made of the same material and have equal 'thickness. The length of thewire AB, (in the set-up X') is equal to the diameter (= PR) of the semi-circle,formed by the wire PQR, (in the set-up 'Y'). Pins, Pl and P2, are attached, towires AB and PQR respectively, with the help of wax. Which of the two pins,P1 or P2, will fall off later? Give reason for your answer.
Answer» pin P2 falls FIRST because the air rises when HEATED and passes through the WIRE so the pin p2 falls first

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