Question

Q1. One word substitution:

a)​What is the bending of light rays known as when they travel from one medium to another?

b) What happens to a light ray as it goes from an optically denser medium to an optically rarer medium?

c)What is a triangular glass block used to separate white light into a spectrum called?

d) What is the term given to the ability of the eye lens to self-adjust its focal length?

e) What is the effect called due to which we see an object for a few seconds more even when the object is removed from the front of the eyes?

f) Name the phenomenon due to which white light separates into the seven colours of which it is made up of.

Answer 1

Answer:

1. refraction
2. it can have total internal reflection
3. prism
4. power of accommodation
5. afterimage
6. dispersion