Collecting sunlight on a paper with the help of a convex lens bums the paper.

Collecting sunlight on a peper with the help of a convex lens burns the paper.

Write the uses of convex lens

Why does obtaining the image of the Sun on a paper with the help of a concave mirror bum the paper?

Give scientific reasons: Why does obtaining the image of the sun on a paper with the help of a concave mirror burn the paper?

Intext Question. Take two convex lenses of different sizes. Collect sunlight on a paper using one of the lenses. The paper will start burning after a while. Note the time required for the paper to start burning. Repeat the process for the second lens. Is the time required the same in both cases? What can you tell from this?

Optical centre of convex lens:

Choose the correct alternative and write it along with its alloted alphabet: To object an image of the same size as that of an object with the help of a convex lens, the object should be placed

Define the following: Convex lens

Human eyes have convex lens.

To obtain an image of the same size as the object with the help of a convex lens,the object should be placed___.