Light travels in optical fibers due to total internal reflection. This phenomenon occurs when light strikes the boundary of the fiber core at an angle greater than the critical angle, causing it to reflect back into the core rather than ...
Category: Class 10 Science
NCERT Solutions for Class 10 Science and important questions for CBSE class 10 for session 2020-2021
Discussion Forum Latest Questions
A magnifying lens is a convex lens that is thicker in the middle and thinner at the edges. It is used to enlarge the apparent size of objects when viewed through it by bending light rays inward, causing them to ...
Lambert’s law relates to the absorption of light by a material. It describes how the intensity of light absorbed by a material is directly proportional to the thickness of the material and the concentration of the absorbing substance.
A cylindrical lens is used to correct the defect of astigmatism. This lens has different curvatures in different meridians, allowing it to compensate for the uneven curvature of the cornea or lens of the eye, thereby improving vision for astigmatic ...
To an astronaut in outer space, the sky appears black. This is because there is no atmosphere to scatter sunlight and create the blue sky effect seen from Earth. Instead, the darkness of space dominates the visual field, punctuated by ...