TS EAMCET · Physics · Dual Nature of Matter
If the de Broglie wavelength of a neutron at a temperature of \(77^{\circ} \mathrm{C}\) is \(\lambda\), then the de Broglie wavelength of the neutron at a temperature of \(1127^{\circ} \mathrm{C}\) is
- A \(\frac{\lambda}{2}\)
- B \(\frac{\lambda}{3}\)
- C \(\frac{\lambda}{4}\)
- D \(\frac{\lambda}{9}\)
Answer & Solution
Correct Answer
(A) \(\frac{\lambda}{2}\)
Step-by-step Solution
Detailed explanation
de-Broglie Wavelength associated with uncharged particle at temperature T is \(\lambda=\frac{\mathrm{h}}{\sqrt{3 \mathrm{mKT}}} \Rightarrow \lambda \propto \frac{1}{\sqrt{\mathrm{~T}}}\)…
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
- Drops of liquid of density \(d\) are floating half immersed in a liquid of density \(\rho\). If the surface tension of the liquid is \(T\), then the radius of the drop isTS EAMCET 2012 Hard
- If \(87.5 \%\) of atoms of a radioactive element decay in 6 days, then the fraction of atoms of the element that decay in 8 days isTS EAMCET 2025 Medium
- The component of vector \(\overrightarrow{\mathbf{A}}=a_x \hat{\mathbf{i}}+a_y \hat{\mathbf{j}}+a_z \hat{\mathbf{k}}\) along the direction of \(\hat{\mathbf{i}}-\hat{\mathbf{j}}\) isTS EAMCET 2008 Easy
- Consider a \(p-n\) junction as a capacitor, formed with \(p\) and \(n\)-materials acting as thin metal electrodes and depletion layer width acting as separation between them. Basing on this, assume that a \(n-p-n\) transistor is working as an amplifier in CE configuration. If \(C_1\) and \(C_2\) are the base-emitter and collector-emitter junction capacitances, then :TS EAMCET 2006 Medium
- If a brass sphere of radius 36 cm is submerged in a lake at a depth where the pressure is \(10^7 \mathrm{~Pa}\), then the change in the radius of the sphere is \((\) Bulk modulus of brass \(=60 \mathrm{GPa})\)TS EAMCET 2025 Medium
- \(\Delta \lambda\) is the difference between the wavelength of \(k_\alpha\) line and the minimum wavelength of the continuous X-ray spectrum when the X-ray tube is operated at a voltage \(V\). If the operating voltage is changed to \(V / 3\), then the above difference is \(\Delta \lambda^{\prime}\). ThenTS EAMCET 2004 Medium
More PYQs from TS EAMCET
- A uniform circular disc of radius \(R\), lying on a frictionless horizontal plane is rotating with an angular velocity ' \(\omega\) ' about is its own axis. Another identical circular disc is gently placed on the top of the first disc coaxially. The loss in rotational kinetic energy due to friction between the two discs, as they acquire common angular velocity is ( \(I\) is moment of inertia of the disc)TS EAMCET 2013 Easy
- The Young's modulus and Poisson's ratio of a material are respectively Y and \(\sigma\). The force required to decrease the area of cross-section of a wire made of this material by \(\Delta \mathrm{A}\) isTS EAMCET 2025 Medium
- A meter scale made of steel, reads accurately at \(25^{\circ} \mathrm{C}\). Suppose in an experiment an accuracy of \(0.06 \mathrm{~mm}\) in \(1 \mathrm{~m}\) is required, the range of temperature in which the experiment can be performed with this meter scale is (Coefficient of linear expansion of steel is \(11 \times 10^{-6} /{ }^{\circ} \mathrm{C}\) )TS EAMCET 2017 Medium
- In a meter bridge two gaps in the metallic strip are connected by \(3 \Omega\) and \(9 \Omega\) resistors. What should be the value of shunt that needs to be added to \(9 \Omega\) resistor to shift balancing point by \(25 \mathrm{~cm}\) ?TS EAMCET 2020 Easy
- A cylindrical metallic wire is stretched to increase its length. If the resistance of the wire is increased by then the percentage increase in its length isTS EAMCET 2021 Easy
- A man standing on a road has to hold his umbrella at \(30^{\circ}\) with the vertical to keep the rain away. He throws the umbrella and starts running at \(10 \mathrm{~km} / \mathrm{h}\). He finds that raindrops are hitting his head vertically. The actual speed of raindrops is :TS EAMCET 2006 Medium