NEET · Physics —

Dual Nature of Radiation and Matter appeared 2 times across 1 year — 4.4% of Physics. This question is from Threshold Wavelength in Photoelectric Effect.

Year 2024 Total
Questions 2 2
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For a metal of work function 6.6 eV, which of the following wavelengths of incident radiation does not give rise to the photoelectric effect? (Take Planck's constant as 6.6 × 10⁻³⁴ J s)

Solution & Explanation

Related Formula
λ₀ = (hc)/(W₀)
Core Logic

For photoelectric emission, λ ≤ λ₀.

λ₀ = 6.6 × 10⁻³⁴ × 3 × 10⁸6.6 × 1.6 × 10⁻¹⁹ = 3 × 10⁻⁷1.6 = 187.5 nm

Wavelengths greater than 187.5 nm will not cause photoelectric emission. Therefore, 200 nm will not produce photoelectric effect.

Pattern Recognition

Photoelectric emission occurs only for wavelengths less than or equal to threshold wavelength.

Chapter Mix

Class 12 Physics: Dual Nature of Radiation and Matter

Reference Study Guides

Dual Nature Of Radiation And Matter

More Dual Nature of Radiation and Matter Previous-Year Questions

Q2 neet_2024_05_may_morning Photons and Wave-Particle Duality
List IList II
A.E = hvI.de Broglie wavelength
B.Diffraction and InterferenceII.Particle nature of light
C.λ = h/pIII.Wave nature of light
D.Compton effectIV.Energy of photon
Choose the correct answer from the options given below:
  • A. \text{(1) A-IV, B-III, C-I, D-II}
  • B. \text{(2) A-I, B-IV, C-III, D-II}
  • C. \text{(3) A-IV, B-I, C-II, D-III}
  • D. \text{(4) A-IV, B-III, C-II, D-I}

Solution

Related Formula

E = hν

λ = (h)/(p)
Core Logic

A. E = hν is energy of photon (IV) B. Diffraction and interference confirm wave nature of light (III) C. λ = (h)/(p) is de Broglie wavelength of particle (I) D. Compton effect confirms particle nature of light (II)

Pattern Recognition

Match properties of light and matter with corresponding theoretical principles.

Chapter Mix

Class 12 Physics: Dual Nature of Radiation and Matter

More Dual Nature of Radiation and Matter Questions — neet_2024_05_may_morning

Practice all Dual Nature of Radiation and Matter previous-year questions →

Rankbit System
JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%) | JEE Physics: Waves (+15.5%) | Electrostatics: Concentric Shells (-29.7%) | Modern Physics: Photoelectric Clones (+34.2%) | Mathematics: Definite Integrals (+18.1%) | Chemistry: Coordination Splitting (-11.4%)