EVERYDAY SCIENCE

Detailed explanation-1: -Any incident ray traveling parallel to the principal axis of a converging lens will refract through the lens and go through the focus, according to refraction rules. After passing through a convex lens, a ray of light that is parallel to the major axis travels through its focus.

Detailed explanation-2: -Any incident ray traveling parallel to the principal axis of a diverging lens will refract through the lens and travel in line with the focal point (i.e., in a direction such that its extension will pass through the focal point).

Detailed explanation-3: -An incident ray traveling parallel to the principal axis will reflect and pass through the focal point. An incident ray traveling through the focal point will reflect and travel parallel to the principal axis.

Detailed explanation-4: -For a concave mirror, a ray of light parallel to the principal axis, after reflection, passes through the focus.

Detailed explanation-5: -The focal point of light rays gets deviated and refracted when the “parallel rays” of the light have passed through a “concave lens to the principal axis”. All the rays are parallel to the “principal axis” of the concave mirror that gets intersected at a specific point which is demonstrated as the principal focus.