A copper bar 2n long has a circular cross section of radius 1 cm. One end is kept at 100^(0)C and the other at 0^(0)C. It is assumed that negligible heat is lost through the surface. (a) The thermal resistance of the bar is (b) The temperature gradient is (c) The temperature at 25 cm from the hot end will be (K = 400 SI units)

A copper bar 2n long has a circular cross section of radius 1 cm. One

1.	A copper bar 2n long has a circular cross section of radius 1 cm. One end is kept at 100^(0)C and the other at 0^(0)C. It is assumed that negligible heat is lost through the surface. (a) The thermal resistance of the bar is (b) The temperature gradient is (c) The temperature at 25 cm from the hot end will be (K = 400 SI units)
Answer» 159 K/w, 50 K/m, `8.75^(0)C` 15.9 K/w, 50 K/m, `87.5^(0)C` 1.59 K/w, 500 K/m, `8.75^(0)C` 159 K/w, 5 K/m, `8.75^(0)C` ANSWER :B