Question

In a blackbody, the intensity of an emitted radiation depends upon :

• A. Temperature
• B. Volume of substance taken
• C. None of the above
• D. Pressure

Answer 1

The correct option is A Temperature

At a given wavelength, intensity increases with increase in temperature.


The graph shows the variation of intensity with wavelength at two temperatures $T_1$ and $T_2$ ( $T_2$ >$T_1$ ).
Higher the temperature, higher the intensity.