A Spherical Black Body With A Radius Of 12cm Radiates 450 Watt, If the radius were halved and the temperature doubled, the power radiated in watt would be :-. ⇒ P = (4 π σ) r 2 T 4 = 450 ………………… (1) Therefore the option (D) is correct. Note that the radius is halved and the temperature is doubled. We need to calculate the power radiated in watts. Calculation: Radius of the spherical black body, R 1 = 12 cm. If the radius were halved, and the temperature doubled, th Explanation The power radiated by a black body is proportional to the square of its radius and the fourth power of its temperature. Power radiated, P1 = 450 watt. NTA Abhyas 2022: A spherical black body with a radius of 12cm radiates 450W power at 500K . What would be the power of radiation if radius were to be halved and the temperature is doubled ? Apr 4, 2018 · A spherical black body with a radius of 12 cm radiates 450 watt power at 500 K. where P and T is the power radiated and temperature respectively. bak4, dtr, yt, okku1, ia0zk, paaw, zit, wc, x7dz, zled,