Number of photo electrons emitted per second is proportional to:
- intensity of incident radiation
- frequency of incident radiation
- stopping potential
- wavelength of incident radiation
The Correct Option is A
Solution and Explanation
Top Questions on Photoelectric Effect
- Answer the following giving reason:
(a) All the photoelectrons do not eject with the same kinetic energy when monochromatic light is incident on a metal surface.
(b) The saturation current in case (a) is different for different intensity.
(c) If one goes on increasing the wavelength of light incident on a metal sur face, keeping its intensity constant, emission of photoelectrons stops at a certain wavelength for this metal.- CBSE CLASS XII - 2025
- Physics
- Photoelectric Effect
- Draw a plot of frequency \( \nu \) of incident radiations as a function of stopping potential \( V_0 \) for a given photoemissive material. What information can be obtained from the value of the intercept on the stopping potential axis?
- CBSE CLASS XII - 2025
- Physics
- Photoelectric Effect
- Find the maximum kinetic energy of the photo-electrons ejected, when light of wavelength 3300 Å is incident on a Cesium surface. Work function of Cesium = 1.9 eV.
- UP Board XII - 2025
- Physics
- Photoelectric Effect
- In an experiment with photoelectric effect, the stopping potential:
- JEE Main - 2025
- Physics
- Photoelectric Effect
Given below are two statements: one is labelled as Assertion (A) and the other one is labelled as Reason (R).
Assertion (A): Emission of electrons in the photoelectric effect can be suppressed by applying a sufficiently negative electron potential to the photoemissive substance.
Reason (R): A negative electric potential, which stops the emission of electrons from the surface of a photoemissive substance, varies linearly with the frequency of incident radiation.
In light of the above statements, choose the most appropriate answer from the options given below:
- JEE Main - 2025
- Physics
- Photoelectric Effect
Questions Asked in CUET exam
- Statements:
1. All engineers are intelligent.
2. Some intelligent people are lazy.
Conclusions:
I. Some engineers are lazy.
II. All intelligent people are engineers.
Choose the correct option:- CUET (UG) - 2025
- Syllogism
Three friends, P, Q, and R, are solving a puzzle with statements:
(i) If P is a knight, Q is a knave.
(ii) If Q is a knight, R is a spy.
(iii) If R is a knight, P is a knave. Knights always tell the truth, knaves always lie, and spies sometimes tell the truth. If each friend is either a knight, knave, or spy, who is the knight?- CUET (UG) - 2025
- Logical Reasoning
- Statements:
All cats are dogs.
Some dogs are birds.
Conclusions:
I. Some cats are birds.
II. Some dogs are cats.
Which conclusions follow?- CUET (UG) - 2025
- Syllogism
- A train crosses a platform 200 m long in 36 seconds and a pole in 18 seconds. Find the speed of the train.
- CUET (UG) - 2025
- Speed, Time and Distance
- What is the value of \(x\)?
Statement I: \(2^2 + 5x + 6 = 0\)
Statement II: \(2^2 + 7x + 12 = 0\)- CUET (UG) - 2025
- Data Sufficiency