A metal rod of length 20 cm and diamter 2 cm is convered with a non conducting substance. One of its ends is maintained at `100^(@)C` , while the other end is put at `0^(@)C`. It is found that 25 g ice melts in 5 min. calculate the coefficient of thermal conductivity of the metal. Latent that of ice = `80 cal g^(-1)`.

A metal rod of length 10 cm and area of cross section 2.8 times 10^-4 m^2 is covered with a non-conducting substance. One end of it is maintained at 80^@C , while the other end is put in ice at 0^@C . It is found that 20 gm of ice melts of 5 min. The thermal conductivity of the metal in Js^-1 m^-1 K^-1 is (Latent heat of ice is 80 cal g^-1 ).

One end of 0.5 m long metal rod is in steam at 100^@C and the other end is put in ice at 0^@C . If ice melts at the rate of 10 g/min, calculate the thermal conductivity of the metal. Take, cross sectional area of rod = 2pi cm^2 . Latent ice of heat = 80 cal/g

When one end f the copper rod 30 cm long and 8 mm in diameter is kept in boiling water at 100^@ C and the other end is kept in ice, it is found that 1.2 gm of ice melts per minute. What is the thermal conductivity of the rod ?

The entropy change in melting 1g of ice at 0^@C . (Latent heat of ice is 80 cal g^(-1) )

One end of a metal rod of length 1.0 m and area of cross section 100 cm^(2) is maintained at . 100^(@)C . If the other end of the rod is maintained at 0^(@)C , the quantity of heat transmitted through the rod per minute is (Coefficient of thermal conductivity of material of rod = 100 W//m-K )

One end of conducting rod is maintained at temperature 50^(@)C and at the other end ice is melting at 0^(@)C . The rate of melting of ice is doubled if:

One end of conducting rod is maintained at temperature 50^(@)C and at the other end ice is melting at 0^(@)C . The rate of melting of ice is doubled if: