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question based on photoelectric effect questions with solutions
Practice Photoelectric effect and dual nature of matter for JEE Main, JEE Advanced, NEET, and Classes 11–12. Attempt each question, then open it for the full solution.
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- MCQmediumPhotoelectric effect and dual nature of matter
A 450 W isotropic light source illuminates a perfectly reflecting surface placed 2 m away. The radiation pressure on the surface is:
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JEE Mains 2025 3 April Morning Shift
Open question & full solution → - MCQeasyPhotoelectric effect and dual nature of matter
Assertion (A): In the photoelectric effect, increasing the intensity of incident light increases the stopping potential. Reason (R): Increasing the intensity of light increases the rate of emission of photoelectrons, provided the incident frequency is greater than the threshold frequency. Choose the correct answer.
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JEE Mains 2025 4 April Morning Shift
Open question & full solution → - MCQeasyPhotoelectric effect and dual nature of matter
The threshold frequency of a metal with work function 6.63 eV is :
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JEE Mains 2024 27 Jan Evening Shift
Open question & full solution → - MCQmediumPhotoelectric effect and dual nature of matter
For a given photosensitive material, K₁ and K₂ are the maximum kinetic energies of photoelectrons produced by light of wavelengths λ₁ and λ₂, respectively. If λ₁ = 2λ₂, which expression gives the work function φ of the material?
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JEE Mains 2026 8 April Evening Shift
Open question & full solution → - MCQmediumPhotoelectric effect and dual nature of matter
Average force exerted on a non-reflecting surface at normal incidence is 2.4 × 10⁻⁴ N. If 360 W/cm² is the light energy flux during span of 1 hour 30 minutes. Then the area of the surface is:
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JEE Mains 2024 08 Apr Morning Shift
Open question & full solution → - MCQmediumPhotoelectric effect and dual nature of matter
When a metal surface is illuminated by light of wavelength λ, the stopping potential is 8 V. When the same surface is illuminated by light of wavelength 3λ, stopping potential is 2 V. The threshold wavelength for this surface is:
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JEE Mains 2024 31 Jan Morning Shift
Open question & full solution → - MCQeasyPhotoelectric effect and dual nature of matter
Light is incident on a metallic plate having work function 110 × 10⁻²⁰ J. If the produced photoelectrons have zero kinetic energy then the angular frequency of the incident light is _________ rad/s. (h = 6.63 × 10⁻³⁴ J.s)
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JEE Mains 202622 January Evening Shift
Open question & full solution → - MCQmediumPhotoelectric effect and dual nature of matter
A monochromatic light of wavelength λ is incident on a metallic plate of work function φ. An electron is emitted normally from point A with maximum kinetic energy and enters a uniform magnetic field B perpendicular to its initial velocity. It follows a circular path and hits the plate again at B. The distance AB is:
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JEE Mains 2025 2 April Morning Shift
Open question & full solution → - NumericmediumPhotoelectric effect and dual nature of matter
A metal surface is illuminated first with monochromatic light of wavelength λ and then with light of wavelength 2λ. Both radiations produce photoelectric emission. The corresponding maximum photoelectron kinetic energies are 5.0 eV and 1.5 eV respectively. Take hc = 1240 eV·nm. If the threshold wavelength of the metal is N nm, find N.
JEE MainsNEETJEE Advanced
Open question & full solution → - MCQeasyPhotoelectric effect and dual nature of matter
The work function of a metal is 3 eV. Which colour of visible light can cause photoelectric emission from the metal?
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JEE Mains 2025 3 April Morning Shift
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