Question

zaheen use a convex lens to make sunlight burn a hole in a piece of card changes the lens in the holder from another land with twice the power what will she have to do to focus the sunlight on the card​

Answer 1

All she needs to do now is to find the right angle that can intensify sunlight and focus it one a certain point on the paper.

Explanation:

• Convex lenses are used for this purpose. These are thick on the sides and thin in the centre.

• To make sure that the paper starts burning, one has to wait a few seconds for the paper to heat up and eventually the phenomenon of combustion takes place.