KCET · Physics · Atomic Physics
If \(\mathrm{n}\) is the orbit number of the electron in a hydrogen atom, the correct statement among the following is
- A electron energy varies as \(\mathrm{n}^{2}\)
- B electron energy increases as \(\mathrm{n}\) increases
- C hydrogen emits infrared rays for the electron transition from \(\mathrm{n}=\infty\) to \(\mathrm{n}=1\)
- D electron energy is zero for \(n=1\)
Answer & Solution
Correct Answer
(B) electron energy increases as \(\mathrm{n}\) increases
Step-by-step Solution
Detailed explanation
\[
\mathrm{E}=-\frac{13.6}{\mathrm{n}^{2}} \mathrm{eV}
\]
Hence, electron energy increases as \(n\) increases.
\mathrm{E}=-\frac{13.6}{\mathrm{n}^{2}} \mathrm{eV}
\]
Hence, electron energy increases as \(n\) increases.
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
- Four metal plates are arranged as shown. Capacitance between \( X \) and \( Y \)
(A \( \rightarrow \) Area of each plate, \( d \rightarrow \) distance between the plates)
KCET 2016 Medium - The spectral series of the hydrogen atom that lies in the visible region of the electromagnetic spectrumKCET 2009 Easy
- The accurate measurement of emf can be obtained usingKCET 2009 Easy
- A luminous point object \(O\) is placed at a distance \(2 R\) from the spherical boundary separating two transparent media of refractive indices \(n_1\) and \(n_2\) as shown, where \(R\) is the radius of curvature of the spherical surface. If \(n_1=\frac{4}{3}, n_2=\frac{3}{2}\) and \(R=10 \mathrm{~cm}\), the image is obtained at a distance from \(P\) equal to
KCET 2024 Medium - The circular motion of a particle with constant speed isKCET 2012 Easy
- In Young's double slit experiment, an electron beam is used to produce interference fringes of width \(\beta_1\). Now the electron beam is replaced by a beam of protons with the same experimental set-up and same speed. The fringe width obtained is \(\beta_2\). The correct relation between \(\beta_1\) and \(\beta_2\) isKCET 2024 Hard
More PYQs from KCET
- Let \( f: R \rightarrow R \) be defined by \( f(x)=x^{4} \), thenKCET 2017 Hard
- Which among the following is not a functional unit of the ecosystem?KCET 2018 Medium
- Two small spheres of masses \(\mathrm{M}_{1}\) and \(\mathrm{M}_{2}\) are suspended by weightless insulating threads of lengths \(\mathrm{L}_{1}\) and \(\mathrm{L}_{2}\). The spheres carry charges \(Q_{1}\) and \(Q_{2}\) respectively. The spheres are suspended such that they are in level with one another and the threads are inclined to the vertical at angles of \(\theta_{1}\) and \(\theta_{2}\) as shown. Which one of the following conditions is essential, if \(\theta_{1}=\theta_{2}\) ?
KCET 2010 Hard - In \(C _4\) plants, \(C _3\) cycle takes place inKCET 2020 Medium
- The ratio of the magnetic dipole moment to the angular momentum of the electron in the 1st orbit of hydrogen atom isKCET 2012 Easy
- The ratio of heats liberated at \( 298 \mathrm{~K} \) from the combustion of one \( \mathrm{kg} \) of coke and by burning
water gas obtained from \( 1 \mathrm{~kg} \) of coke is
(Assume coke to be \( 100 \% \) carbon.)
(Given enthalpies of combustion of \( \mathrm{CO}_{2}, \mathrm{CO} \) and \( \mathrm{H}_{2} \) as \( 393.5 \mathrm{~kJ}, 285 \mathrm{~kJ}, 285 \mathrm{~kJ} \) respectively
all at \( 298 \) K.)KCET 2014 Hard