Class 11Physics2 Thermal Properties of Matter: Heat TransferSpectral Emissive Power and Wien's Displacement Law
EasyThe wavelength of maximum intensity of radiation emitted by a star is $289.8 \, nm$. The radiation intensity of the star is (Stefan's constant $\sigma = 5.67 \times 10^{-8} \, W m^{-2} K^{-4}$, Wien's constant $b = 2898 \, \mu m K$).
- A$5.67 \times 10^8 \, W/m^2$
- B$5.67 \times 10^4 \, W/m^2$
- C$2.89 \times 10^8 \, W/m^2$
- D$1.13 \times 10^8 \, W/m^2$
Explore More
Similar Questions
The wavelength corresponding to the maximum energy emitted by a body at a certain temperature is ${\lambda _0}$. If the temperature of the body is increased such that the new maximum wavelength becomes $\frac{3{\lambda _0}}{4}$, then by what factor does the emissive power increase?
Difficult
View SolutionFour pieces of iron heated in a furnace to different temperatures show different colours listed below. Which one has the highest temperature?
Easy
View SolutionIf $\lambda_{m}$ denotes the wavelength at which the radioactive emission from a black body at a temperature $T \; K$ is maximum,then
The spectral emissive power $E_\lambda$ for a body at temperature $T_1$ is plotted against the wavelength and the area under the curve is found to be $A$. At a different temperature $T_2$,the area is found to be $9A$. Then $\lambda_1/\lambda_2 =$
Difficult
View SolutionThe wavelength of radiation emitted by a body depends upon
Easy
View SolutionVedclass Products
For Students
Vedclass Test Series
Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.
Start Free TrialFor Teachers
Exam Paper Generator
Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.
Try FreeFor Institutes
Online Exam Module
Live online exams with unlimited students, 360° analytics & white-label branding.
See Demo