Explain with the help of ray diagram of convex lens to show the position of image and nature when object is placed :

at focus

With the help of ray diagram for a concave lens explain the position of the image and its nature.

(i) When an object is placed at focus point.

(ii) When object is between F₁ and 2F₂

(iii) Object is between 2F₁ and infinity.

Explain with the help of ray diagram of convex lens to show the position of image and nature when object is placed :

between focus and optical centre.

Explain with the help of ray diagram of convex lens to show the position of image and nature when object is placed :

between focus F₁ and 2F₁

Explain with the help of ray diagram of convex lens to show the position of image and nature when object is placed :

at 2F₁