Trick to learn ray diagram of lens ray diagrams...
Solution
For this you need to understand basics of ray diagram rules
For this you need to understand basics of ray diagram rules
- An incident ray parallel to the principal axis passes through the focus after refraction
by a convex lens. - An incident ray parallel to the principal axis appears to diverge from the focus after refraction by a concave lens.
- An incident ray passing through the focus goes parallel to the principal axis after refraction by a convex lens.
- An incident ray heading towards the focus goes parallel to the principal axis after
refraction by a concave lens. - An incident ray passing through the optical center emerges undeviated from its actual
path after refraction through both concave and convex lenses.