A well-lagged bar of length 100cm has its ends maintained at 100oC and 40oC respectively….

A well-lagged bar of length 100cm has its ends maintained at 100^oC and 40^oC respectively. What is the temperature at a point 60cm from the hotter end?

Correct Answer: Option D

Explanation

100^oC ….100cm
60^oC ….60cm
40^oC …. 0cm
(frac{theta – 40}{100 – 40}) = (frac{60 – 0}{100 – 0})
(theta) = 76^oC