A `100 cm` long cylindrical flask with inner and outer diameter `2 cm` and `4cm` respectively is completely filled with ice as shown in the The constant temperature outside the flask is `40^(@)C`
(Thermal conductivity of the flask is `0.693 W// m^(@)C, L_(ice) = 80cal// gm & In 2=0.693)`
A. Rate of heat flow from outside to the flask is `80 piJ//s`
B. The rate at which ice melts is `(pi)/(4200) kg//s`
C. The rate at which ice melts is `100pi kg//s`
D. Rate of heat flow from outside to flask is `40piJ//s`