Dual Nature of Radiation & Matter
Photoelectric effect, Einstein's equation, de Broglie wavelength, Davisson-Germer experiment.
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Take a full mock →Q1 · Dual Nature of Radiation & Matter · HARD
In a photoelectric experiment, light of wavelength 4000 Å is incident on a metal surface. The stopping potential is found to be 1.0 V. If light of wavelength 3000 Å is incident on the same surface, the stopping potential becomes 2.2 V. What is the work function of the metal? (Take h = 6.63 × 10⁻³⁴ J·s, c = 3 × 10⁸ m/s, e = 1.6 × 10⁻¹⁹ C)
Q2 · Dual Nature of Radiation & Matter · MEDIUM
An electron is accelerated through a potential difference of 100 V. What is the de Broglie wavelength associated with it? (Take h = 6.63 × 10⁻³⁴ J·s, m = 9.1 × 10⁻³¹ kg, e = 1.6 × 10⁻¹⁹ C)
Q3 · Dual Nature of Radiation & Matter · EASY
In the Davisson-Germer experiment, electrons are accelerated through a potential difference and directed at a nickel crystal. The experiment confirmed which of the following?
Q4 · Dual Nature of Radiation & Matter · MEDIUM
A photon and an electron have the same de Broglie wavelength of 1 Å. If the kinetic energy of the electron is E, what is the energy of the photon? (Given: rest mass energy of electron = 0.511 MeV, h = 6.63 × 10⁻³⁴ J·s, c = 3 × 10⁸ m/s)
Q5 · Dual Nature of Radiation & Matter · MEDIUM
The work function of a metal is 3.0 eV. What is the maximum wavelength of light that can cause photoelectric emission from this metal? (Take h = 6.63 × 10⁻³⁴ J·s, c = 3 × 10⁸ m/s, 1 eV = 1.6 × 10⁻¹⁹ J)