A rectangular black body of temperature 127°C has surface area 6 cm x 3 cm and rate of radiation 'E'. If its temperature is increased by 400°C and surface area is reduced to half the initial value then rate of radiation is

Question:

A rectangular black body of temperature 127°C has surface area 6 cm x 3 cm and rate of radiation ‘E’. If its temperature is increased by 400°C and surface area is reduced to half the initial value then rate of radiation is

Options :

(a) 8 E
(b) E
(c) 2 E
(d) 4 E

Answer :

(a) 8 E

Answer Steps :

step 1

step 2

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