Questions
A metal wire of length l and radius r is fixed between rigid supports. Initially it is just taut. Now, due to decrease in temperature, the tension developed in the wire
a
∝l
b
∝1l
c
∝r2
d
∝1r2
detailed solution
Correct option is C
Y=F/A∆l/l=F/Aα∆T⇒F∝A⇒F∝r2Talk to our academic expert!
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