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FAQs on Quick Revision: Dual Nature of Radiation & Matter - Physics Class 12 - NEET

1. What is the dual nature of radiation and matter?
Ans. The dual nature of radiation and matter refers to the ability of both light (radiation) and particles (matter) to exhibit characteristics of both waves and particles. This means that they can behave as both particles and waves depending on the experiment or observation.
2. How was the dual nature of radiation and matter discovered?
Ans. The dual nature of radiation and matter was first proposed by Albert Einstein in his theory of photoelectric effect in 1905. Later, in the early 1920s, experiments conducted by scientists like Davisson and Germer confirmed the wave-particle duality of matter through the phenomenon of electron diffraction.
3. What is the significance of the dual nature of radiation and matter?
Ans. The dual nature of radiation and matter plays a crucial role in understanding the behavior of particles and waves at the quantum level. It helps explain phenomena such as diffraction, interference, and the photoelectric effect. It also forms the basis of quantum mechanics, which is essential for modern physics and technological advancements.
4. Can you provide an example of the dual nature of radiation and matter?
Ans. One example of the dual nature of radiation and matter is the experiment of electron diffraction. When a beam of electrons is passed through a diffraction grating, it produces an interference pattern similar to that observed with light waves. This behavior indicates the wave-like nature of electrons, despite being particles.
5. How does the dual nature of radiation and matter relate to the concept of wave-particle duality?
Ans. The dual nature of radiation and matter is closely related to the concept of wave-particle duality. Wave-particle duality states that particles such as electrons and photons can exhibit both wave-like and particle-like properties. The dual nature refers specifically to the ability of radiation and matter to exhibit both wave and particle characteristics. It is a manifestation of wave-particle duality in the context of radiation and matter.
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