AP EAMCET · PHYSICS · Atomic Physics
The ratio of energies of photons produced due to transition of an electron in hydrogen atom from second energy level to first energy level and fifth energy level to second energy level is
- A \(2: 1\)
- B \(1: 4\)
- C \(3: 2\)
- D \(25: 7\)
Answer & Solution
Correct Answer
(D) \(25: 7\)
Step-by-step Solution
Detailed explanation
\(E_1 \propto \left(\frac{1}{1^2} - \frac{1}{2^2}\right) = \frac{3}{4}\) \(E_2 \propto \left(\frac{1}{2^2} - \frac{1}{5^2}\right) = \left(\frac{1}{4} - \frac{1}{25}\right) = \frac{21}{100}\)…
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
- The maximum distance between the transmitting and receiving TV towers is \(65 \mathrm{~km}\). If the ratio of the heights of the TV transmitting tower to receiving tower is \(36: 49\), the heights of the transmitting and receiving towers respectively are (radius of earth \(=6400 \mathrm{~km}\))AP EAMCET 2018 Medium
- Three blocks of masses \(2 \mathrm{~m}, 4 \mathrm{~m}\) and 6 m are placed as shown in figure.
If \(\sin 37^{\circ}=\frac{3}{5}, \sin 53^{\circ}=\frac{4}{5}\) the acceleration of the system is
AP EAMCET 2024 Easy - The energy stored in a coil of inductance \(L\) carrying a steady current \(i\) is in the formAP EAMCET 2020 Easy
- Acceleration of a body whose displacement follows the equation \(3 s=9 t+5 t^2\) is in \(\mathrm{ms}^{-2}\)AP EAMCET 2021 Easy
- Size of the antenna for a carrier wave of frequency 3 MHz isAP EAMCET 2024 Easy
- Among the following, Ampere's circuital law is represented byAP EAMCET 2023 Easy
More PYQs from AP EAMCET
- The shortest distance between the line passing through the point \(\bar{i}+2 \bar{j}+3 \bar{k}\) and parallel to the vector \(2 \bar{i}+3 \bar{j}+4 \bar{k}\) and the line passing through the point \(2 \bar{i}+4 \bar{j}+5 \bar{k}\) and parallel to the vector \(3 \bar{i}+4 \bar{j}+5 \bar{k}\), isAP EAMCET 2017 Medium
- If \(\mathbf{a}=2 \hat{\mathbf{i}}+\hat{\mathbf{j}}-3 \hat{\mathbf{k}}\) and \(\mathbf{b}=3 \hat{\mathbf{i}}-\hat{\mathbf{j}}+2 \hat{\mathbf{k}}\), then find the angle between the vectors \(2 \mathbf{a}+\mathbf{b}\) and \(\mathbf{a}+2 \mathbf{b}\).AP EAMCET 2020 Easy
- The wavelength of the first line of Balmer series of hydrogen atom is \(\lambda\), what will be the wavelength of the same line in doubly ionized lithium?AP EAMCET 2020 Easy
- If \(A B C\) is not a right angled triangle and \(\sin \left(\frac{\pi}{4}-A\right) \sin \left(\frac{\pi}{4}-B\right)=-\frac{1}{2 \sqrt{2}} \operatorname{cosec}\left(\frac{\pi}{4}-C\right)\), then \(\tan A \tan B+\tan B \tan C+\tan C \tan A=\)AP EAMCET 2019 Medium
- Assertion (a) : Ductile metals are used to prepare thin wires.Reason (R): In the stress-strain curve of ductile metals, the length between the points representing elastic limit and breaking point is very small.AP EAMCET 2006 Easy
- The sum of the minimum and maximum distances of the point \((4,-3)\) to the circle \(x^2+y^2+4 x-10 y-7=0\) isAP EAMCET 2018 Easy