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)`.

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

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:

A long metallic bar of length 0.5 m is placed in such a way that its one end is in ice and other end is in steam at 100^@C . What will be the thermal conductivity of the metal if amount of ice melt in 1 minute is 20 g, Cross sectional area of the bar = 4 xx 10^(-4) m^2 and latent heat of ice = 80 cal g^(-1) .

One end of a 0.25 m long metal bar is in steam and the other is in contact with ice . If 12 g of ice melts per minute, what is the thermal conductivity of the metal? Given cross-section of the bar =5xx10^(-4) m^(2) and latent heat of ice is 80 cal g^(-1)

One end of a brass rod of length 2.0 m and cross section 1cm^2 is kept in stream at 100^@C and the other end in ice at 0^@C . The lateral suface of the rod is covered by heat insulator. Determine the amount of ice melting per minute. Thermal conductivity of brass is 110 W//m-K and specific latent heat of fusion of ice is 80 cal//g .

One end of a uniform brass rod 20 cm long and 10 cm^2 cross-sectional area is kept at 100^@C . The other end is in perfect thermal contact with another rod of identical cross-section and length 10 cm. The free end of this rod is kept in melting ice and when the steady state has been reached, it is found that 360 g of ice melts per hour. Calculate the thermal conductivity of the rod, given that the thermal conductivity of brass is 0.25 cal//s cm^@C and L = 80 cal//g .

A block of ice at 0^(@)C rest on the upper surface of the slab of stone of area 3600cm^(2) and thickness of 10cm . The slab is exposed on the lower surface to steam at 100^(@)C . If 4800g of ice is melted in one hour, then calculate the thermal conductivity of stone. (Given the latent heat of fusion of ice =80cal//g )

A compound rod is formed of a steel core of diameter 1cm and outer casing is of copper, whose outer diameter is 2cm . The length of this compound rod is 2m and one end is maintained as 100^(@)C and the end is at 0^(@)C . If the outer surface of the rod is thermally insulated, then heat current in the rod will be (Given thermal conductivity of steel j=12cal//m//k//s , thermal conductivity of copper =92cal//m//k//s