Questions
Two spheres P and Q of same colour having radii 8 cm and 2 cm are maintained at temperature 727°C and 527°C respectively. The ratio of energy radiated by P and Q is
detailed solution
Correct option is C
Q∝T4r2 ∴ Q1Q2=T14r12T24r22=(400)4(8)2(800)4(2)2=1Talk to our academic expert!
Similar Questions
For a black body at temperature 727°C, its radiating power is 60W and temperature of surrounding is 227° C. If temperature of black body is changed to 1227°C, then its
radiating power will be :
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