Across
- 2. SI unit of power of lens
- 5. medium the ratio of speed of light in vacuum to that in the medium is the refractive index of__________
- 6. of the object ratio of height of image and the height of object
- 8. rarer medium medium in which speed of light is more
- 9. of light the phenomenon of bending of light as it passes from one medium to another
- 10. the capacity of a lens to converge/diverge rays falling o it
Down
- 1. the size of image formed by concave lens when object is between infinity and optical centre o of the lens
- 3. glass slab medium in which refraction takes place both at glass interface and air glass interface
- 4. a transparent material bound by two surface of which one or both the surfaces are spherical
- 7. focus of a diverging lens point from which a beam of light parallel to principal axis after refraction appears to diverge