Four identical rods of same material are joined end to end to form a square. If the temperature difference between the ends of a diagonal is `100^(@)C`, then the temperature difference between the ends of other diagonal will be

Options

A. `0^@C`
B. `(100)/(l) ""^@C`, where l is the length of each rod
C. `(100)/(2l) ""^@C`
D. `100^@C`

Answer

A

Explanation

`T_A-T_B=100^@C`
H `rarr` heat current Since, all the rods are identical

Hence, `(DeltaT)_(AC)=(DeltaT)_(AD)`
`implies T_A - T_C=T_A -T_D`
`implies T_C =T_D`
i.e. temperature difference between C and D will be zero.