Question

drawing the ray diagram explain the formation
of image when an object is placed on the principal
axis of a convex lens at the following position
(with neat diagram wherever necessary)(a) At infinity
(b) Beyond 2 C) At 2F1(d) Between F1and 2F1(e)between focus F1 and optical center o
​

Answer 1

Convex lens is also known as converging lens .

please refer the attachment for the ray diagrams

1) At Infinity :

When object is placed at infinity  the image is formed at focus.

Nature of Image :

• real
• inverted
• highly diminshed

2) Beyond 2F1 :

When object is placed beyond 2F1 the image is between F2 and C2

Nature of Image :

• real
• inverted
• diminished

3) At 2F1   :

When object is placed at 2F1 the image at 2F2

Nature of Image :

• real
• inverted
• same size as object

4) Between F1and 2F1

When object is placed beyond F1 and 2F1 the image is between beyond 2f1[ beyond c]

Nature of Image :

• real
• inverted
• magnified