NEET Exam > NEET Videos > Physics Class 12 > Photoelectric Effect & Wave Theory of Light
Photoelectric Effect & Wave Theory of Light Video Lecture | Physics Class 12 - NEET
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FAQs on Photoelectric Effect & Wave Theory of Light Video Lecture - Physics Class 12 - NEET
| 1. What is the photoelectric effect? |  |
Ans. The photoelectric effect refers to the phenomenon where electrons are emitted from a material's surface when it is exposed to light of a certain frequency or higher. This effect can only be explained by considering light as composed of discrete particles, known as photons.
| 2. How does the photoelectric effect support the particle nature of light? | |
Ans. The photoelectric effect provides strong evidence for the particle nature of light because it shows that electrons are ejected from a material's surface as discrete particles called photons interact with the electrons. The energy of the ejected electrons depends on the frequency of the incident light, which supports the particle-like behavior of light.
| 3. What is the wave theory of light? | |
Ans. The wave theory of light, also known as the wave model, states that light is a form of electromagnetic radiation that propagates through space as a wave. According to this theory, light exhibits properties such as diffraction, interference, and polarization, similar to other types of waves.
| 4. How does the wave theory of light explain the behavior of light? | |
Ans. The wave theory of light explains various phenomena related to light, such as interference and diffraction, by considering light as a wave. It describes how light waves can interfere with each other, leading to constructive or destructive interference patterns. The wave theory also explains how light waves can diffract when passing through small openings or around obstacles, resulting in the bending and spreading of the light.
| 5. How do the photoelectric effect and the wave theory of light relate to each other? | |
Ans. The photoelectric effect and the wave theory of light appear to be contradictory at first. The photoelectric effect suggests that light behaves as particles (photons), while the wave theory describes light as waves. However, this apparent contradiction is resolved by the concept of wave-particle duality. According to this concept, light exhibits both wave-like and particle-like properties, depending on the particular phenomenon being observed.
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Oct 13, 2024 Last updated |
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