TS EAMCET · Physics · Thermal Properties of Matter
Two bodies \(A\) and \(B\) of equal surface area have thermal emissivities of 0.01 and 0.81 respectively. The two bodies are radiating energy at the same rate. Maximum energy is radiated from the two bodies \(A\) and \(B\) at wavelengths \(\lambda_A\) and \(\lambda_B\) respectively. Difference in these two wavelengths is \(1 \mu \mathrm{m}\). If the temperature of the body \(A\) is \(5802 \mathrm{~K}\), then value of \(\lambda_B\) is
- A \(\frac{1}{2} \mu \mathrm{m}\)
- B \(1 \mu \mathrm{m}\)
- C \(2 \mu \mathrm{m}\)
- D \(\frac{3}{2} \mu \mathrm{m}\)
Answer & Solution
Correct Answer
(D) \(\frac{3}{2} \mu \mathrm{m}\)
Step-by-step Solution
Detailed explanation
We knows from Stefan's law, Here, \[ E=e A \sigma T^4 \] \[ E_1=e_1 A \sigma T_1^4 \] \[ E_2=e_2 A \sigma T_2^4 \] so, \[ E_1=E_2 \]…
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 particle of mass \(M\) is moving in a horizontal circle of radius \(R\) with wiform speed \(v\). When the particle moves from one point to a diametrically opposite point, itsTS EAMCET 2017 Easy
- Two infinitely long straight wires \(A\) and \(B\), each carrying current \(I\) are placed on \(x\) and \(y\)-axis, respectively. The current in wires \(A\) and \(B\) flow along \(-\hat{\mathbf{i}}\) and \(\hat{\mathbf{j}}\) directions respectively. The force on a charged particle having charge \(q\), moving from position, \(\mathbf{r}=d(\hat{\mathbf{i}}+\hat{\mathbf{j}})\) with velocity \(\mathbf{v}=\hat{v}\) isTS EAMCET 2019 Hard
- A clock is designed based on the oscillations of a springblock system suspended vertically in the absense of air-resistance. Assume it shows the correct time when a spring of stiffness ' \(\mathrm{k}\) ' and block of mass ' \(\mathrm{m}\) ' are used. If the block is replaced by another block of mass \(4 \mathrm{~m}\), choose the correct option.TS EAMCET 2023 Medium
- An inductor and a resistor are connected in series to an ac source f 10 V . If the potential difference across the inductor is 6 V , then the potential difference across the resistor isTS EAMCET 2024 Hard
- A body of mass \(10 \mathrm{~kg}\) is acted upon by a force given by equation \(F=\left(3 t^2-30\right)\) newtons. The initial velocity of the body is \(10 \mathrm{~m} / \mathrm{s}\). The velocity of the body after \(5 \mathrm{~s}\) isTS EAMCET 2015 Medium
- A particle is exhibiting simple harmonic motion has its displacement \(x\) and velocity \(v\) related as \(4 v^2=25-x^2\). The time period of SHM isTS EAMCET 2020 Medium
More PYQs from TS EAMCET
- Two wires of the same material and length but diameters in the ratio \(1: 2\) are stretched by the same force. The elastic potential energy per unit volume for the wires, when stretched by the same force will be in the ratio.TS EAMCET 2014 Easy
- If \(\mathrm{F}_1, \mathrm{~F}_2\) and \(\mathrm{F}_3\) are the relative strengths of the gravitational, the weak nuclear and the electromagnetic forces respectively, thenTS EAMCET 2023 Easy
- At time \(t=0\), a particle leaves the origin and moves in the positive direction of the \(X\)-axis. If the velocity of the particles varies as \(\mathbf{v}(t)=\mathbf{v}_0\left(1-\frac{t}{t_0}\right),\left|\mathbf{v}_0\right|=10 \mathrm{~m} / \mathrm{s}\) and \(t_0=10 \mathrm{~s}\), then the distance covered by the particle during the first \(20 \mathrm{~s}\) isTS EAMCET 2021 Hard
- The equivalent resistance between points \(A\) and \(B\) in the given network is:
TS EAMCET 2024 Medium - What minimum separation between two objects a human eye would be able to resolve, if the eye pupil diameter is \(2 \mathrm{~mm}\) and the two objects are \(20 \mathrm{~m}\) away from the eye? (Assume, human eye to be equivalent to a convex lens and consider the average wave length of light as \(600 \mathrm{~nm}\) )TS EAMCET 2020 Medium
- A uniform conducting wire \(\mathrm{AB}\) of length \(5 \mathrm{~m}\) and resistance \(5 \Omega\) is connected as shown in the circuit. If the balancing point is obtained at \(3 \mathrm{~m}\) from \(\mathrm{A}\), then the value of \(\mathrm{E}\) is
TS EAMCET 2023 Easy