NEET2020PhysicsThermal Properties of MatterActual
Three stars A ,   B ,   C have surface temperatures T A ,   T B , T C   respectively. Star A appears bluish, star B appears reddish and star C yellowish. Hence,
Options
- AT A > T B > T C
- BT B > T C > T A
- CT C > T B > T A
- DT A > T C > T B
Correct answer
D. T A > T C > T B
Step-by-step solution
Stars approximate black body radiators and their visible colour depend upon the temperature of the radiator. The curves show blue, white, and red stars. The white star is adjusted to 5270   K so that the peak of its blackbody curve is at the peak wavelength of the sun, 550   nm . From the wavelength at the peak, the temperature can be deduced from the Wien displacement law. T A > T C > T B