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Liquid is filled in a vessel which is ke...

Liquid is filled in a vessel which is kept in a room with temperature `20^@C`. When the temperature of the liquid is `80^@C`, then it loses heat at the rate of `60 (cal)/s`. What will be the rate of loss of heat when the temperature of the liquid is `40^@C`?

A

180 cal/s

B

40 cal/s

C

30 cal/s

D

20 cal/s

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