CUET · PHYSICS · PYQ PAPER 2025
In a Hydrogen atom there is transition of electron from one orbit to another. Choose the correct option given below in which the emitted photon will have the highest frequency?
- A \(n=3\) to \(n=2\)
- B \(n=6\) to \(n=2\)
- C \(n=2\) to \(n=1\)
- D \(n=4\) to \(n=2\)
Answer & Solution
Correct Answer
(C) \(n=2\) to \(n=1\)
Step-by-step Solution
Detailed explanation
Highest frequency for largest \(\left( \frac{1}{n_f^2} - \frac{1}{n_i^2} \right)\). For \(n=2\) to \(n=1\): \(\left( \frac{1}{1^2} - \frac{1}{2^2} \right) = 1 - \frac{1}{4} = \frac{3}{4}\) This corresponds to the highest frequency. Answer: \(n=2\) to \(n=1\)
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 ratio of total energy of an electron in 3rd orbit to that in 5th orbit in a hydrogen atom is:CUET 2025 Medium
- An alternating current is given by \( i = i_1 \cos \omega t + i_2 \sin \omega t \). The rms current is given by :CUET 2023 Hard
- A cell of emf 3 V and internal resistance 0.1 \(\Omega\) is connected to a 3.9 \(\Omega\) external resistance. What will be the potential difference across the terminals of the cell ?CUET 2023 Easy
- In a Young's double-slit experiment, two slits are 1.5 mm apart while the screen is 1.2 m away. When a light of wavelength 600 nm is incident on slits, the fringe width will beCUET 2025 Medium
- When a steady current flows in a metalic conductor of non-uniform cross section. Which of these quantities is constant along the conductor?
A. Current
B. Electric field
C. Drift speed
D. Current density
E. Potential gradient
Choose the correct answer from the options given below:CUET 2023 Hard - Which of the following statements is correct?CUET 2023 Hard
More PYQs from CUET
- Answer the question on the basis of passage given below:
Adsorption is the phenomenon of attracting and retaining the molecules of a substance on the surface of a solid resulting into a higher concentration on the surface than in the bulk. The substance adsorbed is known as adsorbate and the substance on which adsorption takes place is called adsorbent. In physisorption adsorbate is held to the adsorbent by weak van der Waals forces and in chemisorption by strong chemical bond.
In coagulation of a positive sol, the flocculating power will be in the order:
A. \(PO _4^{3-}\)
B. \(Cl ^{-}\)
C. \([ Fe ( CN )]^{3-}\)
D. \(SO _4^{2-}\)
Choose the correct answer from the options given below:CUET 2023 Hard - The function \(f(x)=x^x\) has a critical point at :CUET 2023 Easy
- The equivalent resistance of the network shown in figure between the points a and b will be
CUET 2025 Easy - Which of the given parameters contribute to an increase in population density?
(A) Mortality
(B) Natality
(C) Immigration
(D) Emigration
Choose the correct answer from the options given below:CUET 2025 Medium - If \( \lambda_1 \) and \( \lambda_2 \) are the longest wavelengths of the Lyman and Paschen series respectively, then \( \lambda_1 : \lambda_2 \) is:CUET 2023 Medium
- Which one of the following diseases can be treated by human protein (a -1-
antitrypsin) produced by transgenic animals?CUET 2025 Medium