Two spherical black bodies of radii r1 and r2
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Two spherical black bodies of radii r1 and r2. Their surface temperature are t1 and t2 they radiate same power then r2/r1 is
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Answer:
Explanation:
The formula for radiating power is
P=esAT^4
A is area
Since the power is same area is inversely proportional to 4th power of temperature
And area is directly proptional to 2nd power of radius so,
r1^2/r2^2=t2^4/t1^4
r1/r2=t2^2/t1^2
That is the ratio of radius of two spheres is equal to ratio of temperature of 2nd sphere to 1st sphere whole square
Hope u understand the answer
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