Question

teacher ask Aruna to obtain a sharp image of a distant object on the screen by choosing appropriate devices out of the following:

1 . Concave mirror 2. Convex lens 3. Concave lens

She can successfully obtain image by using only :

A. Only (1)

B. Only (2)

C. Both either by (1) &(2)

D. Only (3)

Answer 1

Answer:

c)both either by 1 and 2

Answer 2

Answer: Option (2) is correct

Explanation: With a concave lens, a virtual object would appear to be on the same side as the image and so this object distance is considered a negative distance when using the lens equation. ... This arrangement will allow you to refocus the image farther away but it may not be sharp if the image distance becomes too far.

By using a convex lens it is for sure that we shall get a sharp image as it is a converging lens.

................... HOPE THIS ANSWER HELPS YOU ................ :) :)