A piece of iron is heated in a flame. It firs | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) According to Wien's displacement law, the product of the wavelength corresponding to maximum intensity $(\lambda_{m})$ and the absolute temperatur

Vedclass · Accepted Answer

Wien's displacement Law

Vedclass · Answer

(A) According to Wien's displacement law, the product of the wavelength corresponding to maximum intensity $(\lambda_{m})$ and the absolute temperature $(T)$ of the black body is a constant.$\lambda_{m} T = b$ (constant)This implies $\lambda_{m} \propto \frac{1}{T}$.As the temperature $(T)$ of the iron piece increases, the wavelength $(\lambda_{m})$ of the emitted radiation decreases. Initially, the iron emits longer wavelengths (dull red), and as it gets hotter, it shifts toward shorter wavelengths (yellow and eventually white, which contains all visible colors), confirming the observation.

$A$ piece of iron is heated in a flame. It first becomes dull red, then becomes reddish yellow, and finally turns to white hot. The correct explanation for the above observation is possible by using:

Similar Questions

In the adjoining circuit diagram,the readings of the ammeter and voltmeter are $2 \ A$ and $120 \ V$,respectively. If the value of $R$ is $75 \ \Omega$,then the voltmeter resistance will be (in $\Omega$):

Find the equivalent capacitance across $A$ and $B$ in $\mu F$.

According to the Neo-Darwinian theory,which of the following is responsible for the origin of new species?

$A$ machine gun fires a bullet of mass $40\, g$ with a velocity $1200\, m/s$. The man holding it can exert a maximum force of $144\, N$ on the gun. How many bullets can he fire per second at the most?

If a source of power $4 \, kW$ produces $10^{20}$ photons/second, the radiation belongs to a part of the spectrum called

Vedclass Test Series

Exam Paper Generator

Online Exam Module