Light is a form of energy that enables vision and travels in straight lines at a speed of approximately 300,000 kilometres per second. Light can be reflected, refracted, or absorbed by materials. Reflection occurs when light bounces off a surface. Mirrors reflect light to form images. Regular reflection from smooth surfaces produces clear images, while diffuse reflection from rough surfaces scatters light. Refraction is the bending of light when it passes from one medium to another of different density, which is why objects appear bent in water. This Quiz on Light for Class 8 explores these optical phenomena and the functioning of various optical instruments. Lenses use refraction to focus or disperse light. Dispersion is the splitting of white light into its constituent colours, forming a spectrum. The human eye is a natural optical instrument that focuses light to form images. Learning about light helps students understand optics, vision, and optical instruments. Take these 10 questions to test your knowledge.
