A load (M) suspended from a wire produces an elongation (e ) in the wire then find the rise in temperature required to produce same elongation in the same wire.

Explanation

`Y = ((F/A))/((Delta l)/(l)) alpha = (Delta l)/(l(Delta t))`
`Delta l = (Mgl)/(AY)` …..(1)
`Delta l = l alpha Delta t ` ….(2)
But from given data `(Mgl)/(AY) = l alpha Delta t rArr Delta t = (Mg)/(A Y alpha )`