A spherical ***** body with a radius of 12 cm radiates 450 watt power

Question 1

A spherical ***** body with a radius of 12 cm radiates 450 watt power at 500 K. If the radius were halved and the temperature doubled, the power radiated in watt would be :-

(1) 450 (2) 1000 (3) 1800 (4) 225

Question 2

(3) Given r1 = 12 cm , r2 = 6 cm

A spherical ***** body with a radius of 12 cm radiates 450 watt power

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A spherical ***** body with a radius of 12 cm radiates 450 watt power

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