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NCERT Solutions Class 12 Physics Chapter 10 – Wave Optics
10.1
(b) The curvature of light beams that occurs when they move through different materials due to an alteration in the reflected light wave’s velocity is known as refracted light. The characteristics of the substance through which sunlight travels have no bearing on its rate of travel.
Ultimately, the total wavelength of the incoming light that reflects in the outer atmosphere will be identical as opposed to the wavelength of the light refracted inside the liquid substance.
10.2
Ans – (a) A round-shaped waveform is created when the light beam diverges from an initial place of origin & the brightness of the light diminishes as the total distance from the point of origin increases rapidly. This can be defined as inverse square law. The waveguide in this situation is circular because the light breaks away from the center of origin. The provided graphic displays the pattern of waves coming from an arbitrary point of deduction.
(b) Whenever an individual origin is positioned in the focal point of a convex lens, the path of waves that appear is shaped like an overlapping matrix. Accordingly, once the focal source is positioned in the center of the convex lens, the electromagnetic spectrum of the light that emerges from it constitutes a plane wavefront, as seen in the example shown.
(c) The part of the waveform produced by light from a far-off star that Earth intercepts is a plane waveguide because the star is infinitely far away. The planet experiences a plane wavefront when radiation from the sun approaches Earth. The part of the diffraction of light from a distant star that the Earth intercepts is a plane wavefront because the tiny region on the outermost layer of a huge sphere is almost linear. In this instance, the Earth intercepts a plane in the diffraction formed by light emanating from a far-off star.
10.3
(b) The hue of the illumination determines how quickly it moves in transparent material. The violet-colored element in white light has a refractive index that is greater compared to the reddish portion. Because rate & the refractive index have an inverse relationship, violet light travels through crystals of glass at a slower speed as opposed to the red spectrum. Therefore, violet light penetrates less rapidly as contrasted with the red spectrum in a transparent prism.
10.4
10.5
10.6
Class 12 Physics Chapter – 10 Wave Optics Overview
Wave optics goes further into the nature of light and shows you that light doesn’t always go in straight lines. Instead, it acts like a wave, bending, interfering, and diffracting in interesting ways. This chapter talks with the wave theory of light, Young’s double-slit experiment, and ideas like interference, diffraction, and polarization. You may make sense of these hard principles in a clearer, more visual way with our Wave Optics NCERT Solutions.
But a lot of students feel stuck when they try to use mathematics like path difference = 𝑑 sin𝜃 dsinθ or when they look at interference patterns. It can be hard to understand diagrams, phase changes, and the distinction between constructive and destructive interference. That’s why our solutions include descriptive pictures, solved problems, and comparison charts to help you understand each idea. Because of this, even hard subjects like diffraction and polarization become easier to understand.
The 2025 NCERT syllabus has made this chapter more focused on real-world use. It now has problems that require actual thinking about fringe width, polarization, and how wave optics is used in real life in things like anti-glare glasses and optical equipment, instead of just repeating derivations. Our Wave Optics NCERT Solutions are completely in line with these revisions, so you can stay up to date with the CBSE format.
In short, this chapter teaches you to see light in a new way, not simply as rays but as a wave with patterns and accuracy. Our Wave Optics NCERT Solutions give you the clarity, explanation, and practice you need to grasp this beautiful and important idea, whether you’re getting ready for board exams or just want to improve your physics for entrance tests.
FAQs – Wave Optics Class 12 Chapter – 10 NCERT
Because they have to do with how waves behave, not just how shapes seem. We explain step by step with illustrations and formulas that are next to each other.
Imagine light as waves that are moving. We make this idea easier to understand by utilizing examples from everyday life, such sunglasses and 3D glasses.
Now, the focus is on real-world uses, fringe-based concerns, and how waves behave in real devices. No more repeating derivations.
It generally has questions about ideas, but it does have some that use formulas. That’s why our answers give both examples and explanations that are balanced.
Yes! Both of them have wave optics. Our NCERT-aligned material also helps you get ready for MCQs and questions that need reasoning.