What is the concept of spherical lenses?

Correct option is B

The correct answer is (b) Light refraction.
· Spherical lenses work based on the principle of light refraction, which occurs when light passes through the lens and bends due to the change in medium.
· There are two types of spherical lenses: convex (converging) and concave (diverging).
· Convex lenses bring light rays together to a focal point, while concave lenses spread them out.
· The curvature of the lens affects how much the light bends, determining the focal length and the image's size.
· Refraction happens because light travels at different speeds in different media, such as air and glass. Spherical lenses are used in magnifying glasses, cameras, and corrective eyewear.
Additional Knowledge:
· Radiation of light: Involves the emission of light energy, such as from the sun or other luminous sources.
· Scattering of light: Happens when light is deflected in various directions by particles or irregularities in a medium, leading to phenomena like the blue sky.
· Light reflection: Occurs when light bounces off a surface, such as a mirror, and does not pass through the medium.