Draw a ray from the object to the lens that is parallel to the principal axis. Once through the lens, the ray should pass through the principal focus. Draw a ray which passes from the object ...

Convex and concave lenses can both be used to correct defects of vision. The most commonly occurring defects of vision are ‘short sightedness’ and ‘long sightedness’. People who are ...

Question 11: A concave lens of focal length 15 cm forms an image 10 cm from the lens. How far is the object placed from the lens? Draw the ray diagram. The point of intersection of these refracted ...

Solve related numerical problems. Day 16: Light - Lenses Study convex and concave lenses. Practice ray diagrams and lens formula applications. Solve numerical problems on focal length and ...