Question:
If $ \lambda_m $ denotes the wavelength at which the radiative emission from a black body at a temperature $T\, K$ is maximum, then
If $ \lambda_m $ denotes the wavelength at which the radiative emission from a black body at a temperature $T\, K$ is maximum, then
Updated On: May 19, 2022
- $ \lambda_m \propto T^4 $
- $ \lambda_m$ is independent of T
- $ \lambda_m \propto T $
- $ \lambda_m \propto T^{-1} $
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The Correct Option is D
Solution and Explanation
$ \lambda _m T $= constant ,
$\lambda \propto T^{-1}$ (Wein's displacement law)
$\lambda \propto T^{-1}$ (Wein's displacement law)
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Concepts Used:
Heat Transfer
What is Heat Transfer?
It is defined as the movement of heat across the border of the system due to a difference in temperature between system and its surroundings.
How is Heat Transferred?
Heat can travel from one place to another in several ways. The different modes of heat transfer include:
- Conduction - Heat flows from things with higher temp to objects with lower temp.
- Convection - Movement of liquid molecules from higher temp regions to lower temp regions.
- Radiation - Radiant heat is present in every other way in our daily lives. Thermal radiations are also known to as radiant heat. Thermal radiation is generated by the emission of electromagnetic waves.
