A body radiates heat at the rate of 4 cal/m²/s, when its temperature is 227°C. what is the heat radiated by
the same body when its temperature is 727°C?
Answers
Answered by
0
Answer:
80
Explanation:
Heat energy per unit time R=σAeT
4
Thus heat energy per unit area R
′
=σeT
4
⟹
R
1
′
R
2
′
=(
T
1
T
2
)
4
Initial temperature of the body T
1
=227
o
C=(227+273)K=500K
Final temperature of the body T
2
=727
o
C=(727+273)K=1000K
∴
5
R
2
′
=(
500
1000
)
4
5
R
2
′
=16
⟹R
2
′
=80 cal/cm
2
Answered by
2
Anser
Initial temperature of the body T
1
=227
o
C=(227+273)K=500K
Final temperature of the body T
2
=727
o
C=(727+273)K=1000K
∴
5
R
2
′
=(
500
1000
)
4
5
R
2
′
=16
⟹R
2
′
=80 cal/cm
2
Explanation:
Hi
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