Question

In which of the following two arrangements (a) and (b) shown in the diagram, you can see the light of the bulb ? Explain Your answer

Answer 1

We can see the light of the bulb in the arrangement (a). This is so because in arrangement ‘a’ the rod is straight and light travels in a straight line path. 

Whereas in arrangement ‘b’ the rod is bent. So the light cannot pass through it.