A ray of light, after refraction through a concave lens emerges parallel to the principal axis. - Noon Academy

A ray of light, after refraction through a concave lens emerges parallel to the principal axis.

Class 10 | ICSE | Physics | Refraction through a Lens | Selina

A ray of light, after refraction through a concave lens emerges parallel to the principal axis.

(a) Draw a ray diagram to show the incident ray and its corresponding emergent ray.

(b) The incident ray when produced meets the principal axis at a point F. Name the point F.

Solution:

(a)

(b) When the produced incident ray meets the primary axis at point F, it is called first focus.

i

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