TS EAMCET · Physics · Atomic Physics
An electron collides with a hydrogen atom in its grownd state and excites it to \(n=3\) state. The energy given to the hydrogen atom in this inelastic collision (neglecting the recoil of hydrogen atom) is
- A \(10.2 \mathrm{eV}\)
- B \(12.1 \mathrm{eV}\)
- C \(12.5 \mathrm{eV}\)
- D \(13.6 \mathrm{eV}\)
Answer & Solution
Correct Answer
(B) \(12.1 \mathrm{eV}\)
Step-by-step Solution
Detailed explanation
According to the question, Energy given to hydrogen atom \(=\) Difference in energy level from \(n_1=1\) to \(n_2=3\) states \(=13.6\left(\frac{1}{n_1^2}-\frac{1}{n_2^2}\right)=13.6\left(\frac{1}{1^2}-\frac{1}{3^2}\right)=13.6\left(1-\frac{1}{9}\right)\)…
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 block of mass \(4 \mathrm{~kg}\) at rest on a rough inclined plane making an angle of \(\theta\) with the horizontal. The coefficient of static friction between the block and plane is 0.5 and the frictional force on the block is \(14.14 \mathrm{~N}\), find the value of \(\theta\) ?TS EAMCET 2020 Medium
- 5 moles of Hydrogen \(\left(\gamma=\frac{7}{5}\right)\) initially at S.T.P. are compressed adiabatically so that its temperature becomes \(400^{\circ} \mathrm{C}\). The increase in the internal energy of the gas in kilo-joules is \[ \left(R=8.30 \mathrm{~J} \mathrm{~mol}^{-1} \mathrm{~K}^{-1}\right) \]TS EAMCET 2002 Medium
- Find the equivalent capacitance between point .
TS EAMCET 2020 Medium - Two photons of energies twice and thrice the work function of a metal are incident on the metal surface. Then, the ratio of maximum velocities of the photoelectrons emitted in the two cases respectively, isTS EAMCET 2002 Easy
- A circular coil of area \(100 \mathrm{~cm}^2\) and 20 turns is kept in magnetic field of flux density \(2 \mathrm{~Wb}-\mathrm{m}^2\). It rotates from a position where its plane makes an angle of \(30^{\circ}\) with the field to a position perpendicular to the field in a time \(0.2 \mathrm{~s}\). Find the magnitude of the emf induced in the coil due to its rotation.TS EAMCET 2021 Easy
- A liquid is taken in a long vertical cylindrical vessel and the cylinder is rotated about its vertical axis as shown in the figure. During rotation, the liquid rises along its sides. If the radius of vessel is \(0.05 \mathrm{~m}\) and speed of rotation is \(10 \mathrm{rad} \mathrm{s}^{-1}\), then the height difference between the liquid at the centre of the vessel and its sides is \(\left(\mathrm{g}=10 \mathrm{~ms}^{-2}\right)\)
TS EAMCET 2023 Hard
More PYQs from TS EAMCET
- A solid sphere of mass 2 kg and radius 0.5 m is rolling without slipping on a horizontal surface. The ratio of the rotational and translational kinetic energies of the sphere isTS EAMCET 2025 Medium
- Standing waves are produced in a string 16 \(\mathrm{m}\) long. If there are 9 nodes between the two fixed ends of the string and the speed of the wave is \(32 \mathrm{~m} / \mathrm{s}\), what is the frequency of the wave?TS EAMCET 2019 Easy
- An ant starts from the origin and crawls along the -axis and then along the -axis. The dot product of the ant's displacement vector with the position vector of a point that makes with the -axis and has a magnitude of isTS EAMCET 2022 Medium
- Which of the following phenomena produces the colour in soap bubble?TS EAMCET 2020 Easy
- In a Young's double slit experiment, \(m\) th order and \(n\)th order of bright fringes are formed at point \(P\) on a distant screen, if monochromatic source of wavelength \(400 \mathrm{~nm}\) and \(600 \mathrm{~nm}\) are used respectively. The minimum value of \(m\) and \(n\) are respectively,TS EAMCET 2019 Easy
- The area of cross-section of a potentiometer wire is \(6 \times 10^{-7} \mathrm{~m}^2\). The potential difference per unit length of the potentiometer wire when it is connected to a cell of negligible internal resistance and a resistor in series is \(0.15 \mathrm{Vm}^{-1}\). If the current through potentiometer wire is 0.3 A, then the resistivity of the material of the potentiometer wire isTS EAMCET 2025 Medium