TS EAMCET · Physics · Atomic Physics
The ratio of maximum to minimum wavelength in Balmer series of an hydrogenic atom is
- A \(\frac{9}{5}\)
- B \(\frac{12}{7}\)
- C \(\frac{9}{7}\)
- D \(\frac{14}{9}\)
Answer & Solution
Correct Answer
(A) \(\frac{9}{5}\)
Step-by-step Solution
Detailed explanation
Wavelength of spectral lines of Hydrogen like atom is given as \(\frac{1}{\lambda}=R\left(\frac{1}{n_1^2}-\frac{1}{n_2^2}\right)\) For Balmer series, \(n_1=2\) and \(n_2=3,4,5,6, \ldots\). \(\frac{1}{\lambda}=R\left(\frac{1}{2^2}-\frac{1}{n_2^2}\right)\)...(i) For minimum…
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 parallel plate capacitor of capacitance \(10 \mu \mathrm{~F}\) is charged by a 220 V supply. The capacitor is then disconnected from the supply and is connected to another uncharged parallel plate capacitor of capacitance \(12 \mu \mathrm{~F}\). The loss of electrostatic energy in this process isTS EAMCET 2025 Medium
- A parallel-plate capacitor of plate area 10 cm2 and plate separation 3 mm is charged to a potential difference 12 V and then the battery is disconnected. A slab of dielectric constant 3 is then inserted between the plates. The work done on the system in the process of inserting the slab is \(\alpha \varepsilon_0\). The value of a is (Take \(\varepsilon_0\)as the permittivity of free space)TS EAMCET 2022 Easy
- A swimmer wants to cross a \(200 \mathrm{~m}\) wide river which is flowing at a speed of \(2 \mathrm{~m} / \mathrm{s}\). The velocity of the swimmer with respect to the river is \(1 \mathrm{~m} / \mathrm{s}\). How far from the point directly opposite to the starting point does the swimmer reach the opposite bank?TS EAMCET 2017 Easy
- Which of the following is correct with respect to the following statements? Due to diffusion of electrons from \(n\) to \(p\)-side ....... I. electrons are accumulated in the depletion region. II. electron drift current is from \(p\)-side to \(n\)-side. III. an ionised donor is left in the \(n\)-region. IV. electrons of \(n\)-side come to \(p\)-side and electron-hole combination takes in \(p\)-side. Select the correct option from the followingTS EAMCET 2021 Easy
- A drone fitted with siren in flying directly away from the drone operator and towards a distant building at a speed of \(15 \mathrm{~m} / \mathrm{s}\). The siren produces sound of frequency \(780 \mathrm{~Hz}\). What is the frequency that the operator hears in the echo reflected from the building. [Speed of sound is \(340 \mathrm{~m} / \mathrm{s}\).]TS EAMCET 2019 Medium
- A hydraulic lift as shown in the figure is used to lift a mass of \(1000 \mathrm{~kg}\), which is placed on a piston \(\left(P_1\right)\) of area \(1 \mathrm{~m}^2\). If the cross-section area of the piston \(\left(P_2\right)\) at the other end is \(0.01 \mathrm{~m}^2\), then how much mass needs to be put on it to lift the \(1000 \mathrm{~kg}\) ?
TS EAMCET 2020 Easy
More PYQs from TS EAMCET
- In a galvanometer \(5 \%\) of the total current in the circuit passes through it. If the resistance of the galvanometer is \(G\), the shunt resistance \(S\) connected to the galvanometer isTS EAMCET 2008 Easy
- If the acceleration due to gravity \(g\) doubles and the radius of earth becomes half that of the present value, then the value of escape velocity is (Assume, \(g=10 \mathrm{~m} / \mathrm{s}^2\) and radius of earth, \(R=6400 \mathrm{~km}\) )TS EAMCET 2019 Easy
- The tension in a massless cable connected to an iron ball of \(100 \mathrm{~kg}\) when it is submerged in sea water is \(\left\langle\rho_{\text {iron }}=8 \times 10^3 \mathrm{~kg} / \mathrm{m}^3\right.\) and \(\rho_{\text {sea watex }}=1000 \mathrm{~kg} / \mathrm{m}^3, g=10 \mathrm{~m} / \mathrm{s}^2\) )TS EAMCET 2019 Medium
- A block of mass \(2 \mathrm{~kg}\) is initially at rest on a horizontal frictionless surface. A horizontal force \(\overrightarrow{\mathbf{F}}=\left(9-x^2\right) \hat{\mathbf{i}}\) newtons acts on it, when the block is at \(x=0\). The maximum kinetic energy of the block between \(x=0\) and \(x=3 \mathrm{~m}\) in joule isTS EAMCET 2004 Medium
- Rain is falling vertically with a speed of \(30 \mathrm{~m} / \mathrm{s}\). A man rides a bicycle with a speed of \(10 \mathrm{~m} / \mathrm{s}\) from East to West direction. At what the angle with the vertical, he sees the rain falling?TS EAMCET 2019 Easy
- The carnot heat engine have an efficiency of The temperature of sink is maintained at To increase the efficiency upto the increment in the source temperature isTS EAMCET 2021 Medium