Question:
Radiation of two photons having energies twice and five times the work function of a metal are incident successively on the metal surface.Find out the ratio of maximum velocity of photo electrons emitted in the two cases.
Radiation of two photons having energies twice and five times the work function of a metal are incident successively on the metal surface.Find out the ratio of maximum velocity of photo electrons emitted in the two cases.
Updated On: Oct 4, 2024
- \(\frac{v_1}{v_2}=\frac{1}{3}\)
- \(\frac{v_1}{v_2} = \frac{1}{4}\)
- \(\frac{v_1}{v_2} = 1
- \(\frac{v_1}{v_2} = \frac{1}{2}\)
Hide Solution
Verified By Collegedunia
The Correct Option is D
Solution and Explanation
The correct option is (D): \(\frac{v_1}{v_2} = \frac{1}{2}\)
Was this answer helpful?
0
0
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
- A light source of wavelength \( \lambda \) illuminates a metal surface, and electrons are ejected with a maximum kinetic energy of 2 eV. If the same surface is illuminated by a light source of wavelength \( \frac{\lambda}{2} \), then the maximum kinetic energy of ejected electrons will be (The work function of the metal is 1 eV).
- JEE Main - 2025
- Physics
- Photoelectric Effect
- The cut-off voltage \( V_0 \) versus frequency \( \nu \) of the incident light curve is a straight line with a slope of \( \frac{h}{e} \). Explain this observation.
- CBSE CLASS XII - 2025
- Physics
- Photoelectric Effect
- Explain the following observations using Einstein’s photoelectric equation:
(a) Photoelectric emission does not occur from a surface when the frequency of the light incident on it is less than a certain minimum value.
(b) It is the frequency, and not the intensity of the incident light which affects the maximum kinetic energy of the photoelectrons.
(c) The cut-off voltage \( V_0 \) versus frequency \( \nu \) of the incident light curve is a straight line with a slope \( \frac{h}{e} \).
- CBSE CLASS XII - 2025
- Physics
- Photoelectric Effect
- Two statements are given, one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer from the codes (A), (B), (C), and (D) as given below.
Assertion (A): For monochromatic incident radiation, the emitted photoelectrons from a given metal have speed ranging from zero to a certain maximum value.
Reason (R): Each metal has a definite work function.
- CBSE CLASS XII - 2025
- Physics
- Photoelectric Effect
View More Questions
Questions Asked in SRMJEEE exam
- A current of 2 A passes through a coil of 100 turns, producing a magnetic flux of 5 × 10⁻⁵ Wb per turn. What is the magnetic energy associated with the coil?
- SRMJEEE - 2025
- Magnetic Field
- A box contains 5 red balls and 7 blue balls. Two balls are drawn at random without replacement. What is the probability that both balls are red?
- SRMJEEE - 2025
- Probability
- Calculate the Reynolds number for a liquid with density 1 g/cm³ and viscosity 8 × 10⁻⁴ Pa·s, flowing at 0.5 m/s through a pipe of diameter 4 cm.
- SRMJEEE - 2025
- Viscosity
- Markovnikov's rule is applicable to which of the following reactions?
- SRMJEEE - 2025
- Chemical Reactions
- The molar conductivities at infinite dilution for Na₂SO₄, K₂SO₄, KCl, HCl, and HCOONa at 300 K are 260, 308, 150, 426, and 105 S·cm²·mol⁻¹, respectively. What will be the molar conductivity at infinite dilution (Λ⁰) for formic acid in the same unit?
- SRMJEEE - 2025
- Mole concept and Molar Masses
View More Questions