Question

Emissivity of a body of mass 600 gm and of specific heat 0.1 cal/gm0c is 0.6. If the radiant energy of 2100 joule is incident on the surface per second then the rate at which temp of body rises is -

1) 3.330c/sec              2) 50 c/sec

3) 210c/sec                 4) 140 c/sec


​

Answer 1

Answer:

the temperature is 140c/sec

Answer 2

Answer:

140 c is the right

4 point