In the figure-II temperature of inner surface of cylinder is `0^@C` and temperature of outer surface is `100^@C`. In figure-I temperature of one end of cylinder is `100^@C`while another end is at `0^@C`

`(dT)/(dr)` =temperature gradient in radial direction at steady state in figure -II
`(dT)/(dl)`=temperature gradient in linear direction at steady state in figure -I . both cylinder are made of uniform material

Options

A. `(dT)/(dr)` =constant `(dT)/(dr)ne` constant
B. `(dT)/(dr) ne` constant `(dT)/(dl)`=constant
C. `(dT)/(dr) ne` constant `(dT)/(dl)` =constant
D. `(dT)/(dr) ne` constatn `(dT)/(dl) ne` constant

Answer

2