Question

1. Speed of light in air is _____
2. Clear water and glass are examples of ______ objects
3. A beam of light is made up of _____ rays
4. Define rectileanear propagation of light .
5. How do we see non luminous objects ? ​

Answer 1

answer

1. 300,000

2. transparent objects

3. hypothetical construction

4. rectilinear propagon

5. We know that a non luminous object is one that not emit its own light although it can still reflected from the object towards our eyes