A black body at 22 7 ∘ C radiates heat at the rate of 7 cals / cm 2 s . At a temperature of 72 7 ∘ C , the rate of heat radiated in the same units will be :NEET 2009 (Mains)

P ∝ T 4 P 1 P 2 = ( 500 1000 ) 4 P 2 = 16 P 1 = 112

Start Free Mock LoginAlready registered? Login here

Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoRadiationMedium2 minPYQ_2009

PhysicsMediumsingle choice

A black body at $22 7^{\circ} C$ radiates heat at the rate of $7 cals / cm^{2} s$ . At a temperature of $72 7^{\circ} C$ , the rate of heat radiated in the same units will be :NEET 2009 (Mains)

Options:

Answer:

Solution:

$P \propto T^{4}$ $\frac{P _{2}}{P _{1}} = (\frac{1000}{500})^{4} P_{2} = 16 P_{1} = 112$

Stream:NEETSubject:PhysicsTopic:Heat & ThermoSubtopic:Radiation

⏱ 2mℹ️ Source: PYQ_2009

Doubts & Discussion

Loading discussions...