Question

Obtain a point-like object of the sun using a convex lens. What have you done to get this image? Prepare a note.

Answer 1

Hint:We know that a convex lens is a converging lens, which means that the points focused through this kind of a lens tend to meet at one common point. Since we are using the sun as the object or the light source, it can be quite simple but one should be very careful while doing it.

Complete answer:
We realize that the Sun is a natural source of light which is set away from us. Consequently, to get a point-like object of the Sun, we utilize the Sun as the object. This should be possible through the following steps:

Take a convex lens and hold the convex lens pointing toward the Sun to such an extent that the Sun's beams fall on it. Hold a paper on the opposite side of the convex lens at some distance as displayed in the figure.

The paper goes about as a screen. Now, we focus the light coming from the Sun on the paper by changing the distance between the convex lens and the paper till a brilliant and sharp spot of light is gotten on the paper. This bright spot on the paper is the picture of the Sun shaped by the convex lens.

In the event that the convex lens is stood firm on a similar foothold for a couple of moments, the paper bursts into flames at where the picture of the Sun was shaped. This is on the grounds that the arched focal point combines the equal beams of light coming from the Sun at the bright spot where the picture is framed on the paper. As the convergence of the Sun's beams expands, the paper gets warmed and catches fire.

Note:The observations must be done with most care as the paper catching fire can be harmful to any curious mind when it comes in contact with the skin. Since we are using the sun as the object or the light source, it can be quite simple but one should be very careful while doing it.