Question

what would be the nature of the wavefront of light coming from the candle if we are reading novel in a dark room dimly lit by a single candle

Answer 1

Answer:

A candle in a dark room acts as a point source...... a point source within small distances give sperical wavefronts......

please note.... a point source gives plane wavefront in long distances...

Answer 2

The wavefront of light of candle shows the spreading of light.

• The wavefront is described by the Huygen's Principle.
• The principle tells about the spreading of light in the forward direction. The every point on the wavefront will shows it own wavelets.
• The each new wavelet is in the form of tangents, therefore the light travels in the straight line.
• If we see, the example of candle the light travel is straight line.
• So where you put the candle the book should be in forward direction of the candle so that you can read it