If the object is placed at a principal focus $F_{1}$ of a convex lens, draw the ray diagram for the image formation.

Open in App

Solution

As the object is placed on the principal focus $F_{1}$ so the ray $(A M)$ going parallel to the principal axis will pass through the other focus after converging through the lens and the ray $(A D)$ passing through the center $(D)$ of the lens will go undeviated after refraction. As both of these emergent rays parallel to each other so the image will be formed at $\infty$

Suggest Corrections

Similar questions

Q. Draw a ray diagram to show the formation of image by a convex lens when an object is placed in front of the lens between its optical centre and principal focus.

Draw well labelled ray diagrams for image formation by convex lens when

(1) Object is at 2F₁

(2) Object between F₁ and 2F₁

(3) Object between focus F₁ and optical centre O.

Q. Define principal focus of a convex lens. Draw light ray diagram of an image formed, when the object is placed in between principal focus

F

and

2 F

.
Write lens formula.
Calculate power of a lens if its focal length is

0.5 m

Draw ray diagram showing the image formation by a convex lens when an object is placed at infinity.

Draw ray diagrams showing the image formation by a convex lens when an object is placed

(a) between optical centre and focus of the lens
(b) between focus and twice the focal length of the lens
(c) at twice the focal length of the lens
(d) at infinity
(e) at the focus of the lens

Join BYJU'S Learning Program

If the object is placed at a principal focus F1 of a convex lens, draw the ray diagram for the image formation.

If the object is placed at a principal focus $F_{1}$ of a convex lens, draw the ray diagram for the image formation.