Question

If a cylinder of diameter `1.0cm` at `30^(@)C` is to be slid into a hole of diameter `0.9997 cm` in a steel plate at the same temperature, the minimum required rise in the temperature of the plate is: (Coefficient of linear expansion of steel`= 12 xx 10^(-6//@)C`)
A. `25^(@)C`
B. `35^(@)C`
C. `45^(@)C`
D. `55^(@)C`

Answer 1

Correct Answer - A
`r_(2)=r_(1)(1+alphaDeltat) impliesr_(2)-r_(1)=r_(1)alphaDeltat`