AP EAMCET · PHYSICS · Thermal Properties of Matter
Wein's displacement law states
- A \(\lambda_m T=\) constant
- B \(\frac{\lambda_m}{T}=\) constant
- C \(\frac{T}{\lambda_m}=\) constant
- D \(\lambda_m+T=\) constant
Answer & Solution
Correct Answer
(A) \(\lambda_m T=\) constant
Step-by-step Solution
Detailed explanation
According to Wien's displacement law, the wavelength \(\left(\lambda_m\right)\) corresponding to which the energy emitted by a black body maximum is inversely proportional to its absolute temperature (T). i.e., \(\quad \lambda_m \propto \frac{1}{T}\)…
See the Complete Solution
Get step-by-step explanations for this and 2.5 Lakh+ more JEE, NEET & CET questions.
- Unlock all solutions
- Practice the full chapter
- Track accuracy across PYQs
4.8 rated on Google Play · 14,000+ reviews
More questions from PHYSICS
- A long wire lies along \(X\)-axis and carries a current of \(40 \mathrm{~A}\) in positive \(x\)-direction. A second long wire is perpendicular to the \(x y\)-plane, passes through point \((3.0 \mathrm{~m}) \hat{j}\) and carries a current along positive \(z\)-direction. If the magnitude of resultant magnetic field at the point \((2.0 \mathrm{~m}) \hat{j}\) \(R=5 \times 10^{-6} \mathrm{~T}\) then the current in the second wire is
(Permeability of free space, \(\mu_0=4 \pi \times 10^{-7}\) SI unit)AP EAMCET 2022 Hard - An auditorium has volume of \(10^5 \mathrm{~m}^3\) and surface area of absorption \(2 \times 10^4 \mathrm{~m}^2\). Its average absorption coefficient is 0.2 . The reverberation time of the auditorium in seconds isAP EAMCET 2002 Easy
- The current gain for a transistor working as common base amplifier is 0.96 . If the emitter current is \(7.2 \mathrm{~mA}\), then the base current isAP EAMCET 2021 Medium
- A bullet of mass \(0.02 \mathrm{~kg}\) travelling horizontally with velocity \(250 \mathrm{~ms}^{-1}\) strikes a block of wood of mass \(0.23 \mathrm{~kg}\) which rests on a rough horizontal surface. After the impact, the block and bullet move together and come to rest after travelling a distance of \(40 \mathrm{~m}\). The coefficient of sliding friction of the rough surface is \(\left(g=9.8 \mathrm{~ms}^{-2}\right)\)AP EAMCET 2009 Medium
- The kinetic energy of a particle executing simple harmonic motion at a displacement of 3 cm from the mean position is 4 mJ. If the amplitude of the particle is 5 cm, then the maximum force acting on the particle isAP EAMCET 2025 Medium
- A car is travelling at \(30 \mathrm{~ms}^{-1}\) speed on a circuiar road of radius \(300 \mathrm{~m}\). If its speed is increasing at the rate of 4 \(\mathrm{ms}^{-2}\), then its acceleration isAP EAMCET 2023 Easy
More PYQs from AP EAMCET
- If the circles \(\mathrm{S} \equiv x^2+y^2-14 x+6 y+33=0\) and \(\mathrm{S}^{\prime} \equiv x^2+\) \(y^2-a^2=0(a \in \mathrm{~N})\) have 4 common tangents then possible number of values of \(a\) isAP EAMCET 2024 Easy
- Which acid among the following has the highest \(\mathrm{p} K_a\) value?AP EAMCET 2020 Easy
- If the portion of a line intercepted between the coordinates axes is divided by the point \((2,-1)\) in the ratio of \(3: 2\), then the equation of that line isAP EAMCET 2018 Easy
- If the line \(3 x-m y+5=0\) is a tangent to the hyperbola \(3 x^2-4 y^2=300\) then the square of the \(Y-\) intercept made by this tangent line isAP EAMCET 2022 Medium
- Let \(S_n=\sum_{k=1}^n(-1)^{k-1} \cdot k^2\) for \(n \geq 1\). Given that \(S_{2 n}=-n(2 n+1)\) for \(n=1,2,3, \ldots\). then \(S_{77}=\)AP EAMCET 2018 Hard
- If \(A\) and \(B\) are the two real values of \(k\) for which the system of equations \(x+2 y+z=1\), \(x+3 y+4 z=k \cdot x+5 y+10 z=k^2\) is consistent, then \(A+B=\)AP EAMCET 2018 Medium