Write the uses of convex lens

Write the uses of concave lens

Answer the following questions : State two uses of a convex lens.

Answer the following questions : State uses of a 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

Calculate the power of convex lens of focal length 15 cm.

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.

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

Answer the following questions : In the case of a convex lens , show the path of the refracted ray when the incident ray of light is parallel to the principal axis of the lens passes through the focus of the lens passes through the optical centre of the lens.

Answer the following questions : What is the sign of the power of a convex lens a concave lens ?