Question

when object moves closer to a concave lens the image by it shift


please explain it ​

Answer 1

When an object moves closer to a concave lens the image formed by it shifts  c) towards the lens.

What is concave lens?

• Concave lens is a spherical refractive lens which is thinner in the middle and is wide at the edges.
• It is used for correcting short sightedness or myopia.

What is the nature of image formed by a concave lens?

Concave lens produces virtual and erect images only.

What are the cases of object positions for image formation through concave lens?

There are only two cases for  image formation through concave lens:

• Object at infinity: Virtual and erect image at focus and highly diminished.

• Object between optical centre and infinity: Virtual and erect image between focus and optical centre.

So, as object moves closer to lens, the image moves towards the lens.

Your question is missing the options, you might be referring to the question below:

"When an object moves closer to a concave lens the image formed by it shifts

a) away from the lens

b) first away and then towards the lens

c) towards the lens

d) first towards and then away from the lens"

Answer 2

Answer:

bhaii har ek me ek ek bolre mai bolta ki it moves towards the lens.