☰
✕

Wave Optics
Question
Wired Faculty App

Answer the following question:
When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. Suggest a possible explanation.

Answer

A low flying aircraft reflects the TV signal. The slight shaking on the TV screen is due to interference between the direct signal and the reflected signal.

Sponsor Area

Some More Questions From Wave Optics Chapter

What is the shape of the wavefront in each of the following cases:
 Light emerging out of a convex lens when a point source is placed at its focus.

What is the shape of the wavefront in each of the following cases:
The portion of the wavefront of light from a distant star intercepted by the Earth. 

Is the speed of light in glass independent of the colour of light? If not, which of the two colours red and violet travels slower in a glass prism?