Physics, asked by madhu461, 1 year ago

Answer all the 3questions

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Answered by Rishi2911
1
18- 3
19- 1
20-2

Hope it helps

madhu461: explain
Rishi2911: 18 is obvious, 19 because metal when heated loses strength as it tends to start melting at high temperatures so its resistance decreases, 20 because super conducters are so energized with the cooling that they have a ton of
Rishi2911: *conductivity
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