Question

liquid is filled in a vessel which is kept in a room where the room temperature is 20°C. When the temperature of the liquid is 80°C , it loses heat at the rate of 60 cal per second. What will be the rate of loss of heat when the temperature of liquid is 40°C? (a) 180 cal/s. (b) 40 (c) 30 (d) 20 ​

Answer 1

Answer:

(d) 20 ​

Explanation:

We know that,

Q/t α (T2 – T1)

So,

[(Q/t)1]/[(Q/t)2] = [(80 – 20)]/[(40 – 20)]

[(Q/t)2] = 20 cal/s