One end of copper rod of uniform cross-section and of length 1.45 m is in contact with ice at 0ºC and the other end with water at 100°C. The position of point along its length where a temperature of 200°C should be maintained so that in steady state the mass of ice melting is equal to that of steam produced in the same interval of time is x cm from hotter end of rod. Find x [Assume that the whole system is insulated from surroundings]. (take L v = 540 cal/g L f = 80 cal/g)
Text Solution
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(10)
i 1 = 
= 
= L V 
i 2 = 
= 
= L f 
According to problem,
= 
= 
.
⇒ x = 
= 0.1 m = 10 cm
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