Question

What happens when incense stick is lighted near burning candle class9?

Answer 1

In a candle, the wax first melts, then turns into a vapor above the wick and the oxidation region, where the vaporized fuel mixes with air, surrounds the central, cooler region. You can demonstrate this by extinguishing a candle and then relighting the smoke above the candle... the flame will flash back to the wick.

Answer 2

Answer:

When incense stick is lighted near burning candle, a circle of red light is seen.

Explanation:

1. The impression of the image on the retina lasts for about 1/16 th of a second after the removal of the object.

2. If a burning stick of incense is revolved at a rate of more than sixteen revolutions per second, a circle of red light is seen.

3. It is due to persistence of vision.

Concepts:

Persistence of vision :

The image of an object remains imprinted on our retina for 1/16 th of a second after the object is removed from the sight.

The sensation on the retina persists for a while.

This is called persistence of vision.