Question

15. If the image formed by a lens for all positions of the object placed in front of it is always

virtual, erect and diminished. State the type of the lens, draw a diagram in support of your

answer. If the numerical value of focal length of such a lens is 20 cm, find its power in new

cartesian sign convention.​

Answer 1

If the image formed by a lens for all positions of the object placed in front of it is always virtual, erect and diminished, state the types of lens. Draw a ray diagram in support of your answer, if the numerical value of focal length of such a lens is 20 cm. Find its power in new cartesian of convention.

Answer 2

Answer:

This might help you

Explanation:

Concave lens

P= 1/f

= 1/0.2m = -5D( Since it is a concave lens)