Compton's experiment provides evidence that the light hasI. a wave natureII. a particle natureIII. an electromagnetic nature
Correct answer: B. II only.
- A. I only.
- B. II only.
- C. I and III.
- D. II and III.
Explanation
Compton's experiment is a pivotal demonstration of the particle nature of light. By observing the scattering of X-rays from electrons, Compton provided evidence for the photon model of light, where photons collide with electrons, resulting in a change in wavelength. This shift, known as the Compton effect, supports the idea that light behaves as particles. Option II only is correct. Options I, I and III, and II and III are incorrect because they suggest wave or electromagnetic characteristics, which are not the focus of Compton's findings.
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About Photons and the Particle Model of Light
The particle model treats light as photons with energy E equals hf and momentum related to wavelength. Questions involve the photoelectric effect, work function, threshold frequency, stopping potential and photon energy, while distinguishing particle behaviour from the wave description of interference and diffraction.
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