CUET · PHYSICS · PYQ PAPER 2025
The 'stopping potential' in photoelectric emissions
- A depends on both intensity and frequency of incident radiation.
- B depends on frequency and not on intensity of incident radiation.
- C depends on intensity and not on frequency of incident radiation.
- D does not depend on intensity and frequency of incident radiation.
Answer & Solution
Correct Answer
(B) depends on frequency and not on intensity of incident radiation.
Step-by-step Solution
Detailed explanation
Stopping potential is determined by the maximum kinetic energy of emitted electrons, which according to Einstein's equation ( \(e V_0=h \nu-\Phi_0\) ), depends solely on the frequency of incident light. It is independent of intensity because intensity only changes the number of…
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 line of sight distance for two antennas of height 100 m and 400 m above earth surface is approximately: (Given \( R = 6400 \text{ km}, \sqrt{20} = 4.5 \))CUET 2023 Medium
- A. If the ionisation energy of hydrogen atom is 13.6 eV then its ionisation potential is 13.6 V.
B. All the setries of hydrogen spectrum have their respective shortest wavelength line corresponding to n = \(\infty\).
C. Paschen, Brackett and Pfund series all the three series are obtained in UV region.
D. The total energy of an electron is equal to the negative of its kinetic energy in the same orbit.
Choose the most appropriate answer from the options given below:CUET 2023 Easy - To observe diffraction, the size of an obstacleCUET 2025 Medium
- Two electrons are moving with different kinetic energies. If 1st electron is moving with kinetic energy \( k \) and the 2nd electron with kinetic energy \( 4k \), the ratio of their de Broglie wavelengths will be respectively:CUET 2023 Medium
- In a double slit experiment, if the distance between the slits be reduced to half, then the new fringe width will beCUET 2025 Hard
- A long solenoid is formed by winding 40 turns/cm. The current required to produce a magnetic field of 22 mT inside the solenoid will be (Take \( \mu_0 = 4\pi \times 10^{-7} \, Tm A^{-1} \))CUET 2025 Medium
More PYQs from CUET
- Which of the following is helpful in removing oil stains from the clothes ?CUET 2023 Medium
- Disputes related to paternity can be solved by:CUET 2023 Medium
- Two capacitors of capacitance of \( 6 \, \mu\text{F} \) and \( 12 \, \mu\text{F} \) are connected in series with a battery. The voltage across \( 6 \, \mu\text{F} \) capacitor is 2 V. The total voltage across the combination isCUET 2025 Hard
- If \(P(A \cap B)=0.4, P(\bar{A} \cap \bar{B})=0.3\), then the value of \(P(\bar{A})+P(\bar{B})\) is:CUET 2023 Medium
- An electric dipole of dipole moment \(p\) is rotated in an electric field of magnitude \(E\) from the most stable orientation to most unstable orientation. The work done in the process is:CUET 2023 Hard
-
List-I (Name reaction.) List-II (Reaction) (A) Williamson ether synthesis (I) 
(B) Hydroboration oxidation (II) 
(C) Reimer-Tiemann reaction (III) 
(D) Friedel Craft Acylation reaction (IV) 
Choose the correct answer from the options given below:CUET 2025 Easy