Science
Light Reflection and Refraction
प्रकाश का परावर्तन तथा अपवर्तन
Class 10 Science Chapter “Light Reflection and Refraction” introduces how light behaves when it reflects from surfaces and bends while passing between different media. Students study the laws of reflection, image formation by spherical mirrors, refraction of light, and the use of lenses to form images. The chapter builds understanding of ray diagrams, mirror and lens behaviour, and common optical phenomena seen in everyday life.
1Reflection of light
प्रकाश का परावर्तन
In this Class 10 Science topic from “Light Reflection and Refraction,” students learn how light behaves when it strikes a polished surface and returns to the same medium. The topic covers the laws of reflection, regular and diffuse reflection, ray diagrams, and image formation by plane and spherical mirrors. Students also explore the pole, focus, centre of curvature, focal length, mirror formula, magnification, and everyday uses of mirrors through observations and numerical problems.
0 questionsSpherical mirrors
गोलीय दर्पण
In this Class 10 Science topic from Light Reflection and Refraction, students explore spherical mirrors, including concave and convex mirrors, and understand how their curved surfaces reflect light. They learn key terms such as pole, principal axis, centre of curvature, radius of curvature, focus and focal length. The topic covers standard ray diagrams, image formation for different object positions, the mirror formula, magnification and sign conventions, helping students connect reflection principles with uses such as vehicle mirrors and reflecting instruments.
0 questionsRefraction
प्रकाश का अपवर्तन
In this Class 10 Science topic, students learn how light changes direction when it passes from one transparent medium to another because its speed changes. The chapter introduces the laws of refraction, refractive index, and the relationship between the angles of incidence and refraction. Students interpret ray diagrams, study effects such as apparent depth and bending through a glass slab, and build a clear foundation for understanding lenses and image formation.
0 questionsLenses
लेंस
In Class 10 Science, the Lenses topic from Light Reflection and Refraction explains how convex and concave lenses bend light to form images. Students study principal rays, image formation for different object positions, ray diagrams, and the relationship between object distance, image distance, and focal length through the lens formula. The topic also introduces magnification, lens power, sign conventions, and everyday uses of lenses in optical instruments.
1 questionsImage formation
प्रतिबिंब का निर्माण
In this Class 10 Science topic from the chapter Light Reflection and Refraction, students learn how images are formed by spherical mirrors and lenses. They study the reflection and refraction of light rays, use standard ray diagrams, and determine an image’s position, size, nature, and orientation. The topic also introduces real and virtual images, the mirror and lens formulas, magnification, and sign conventions, helping students explain image formation in familiar optical devices.
8 questions