KnowledgeBoat Logo
|

Physics

(a) An object is placed at 2F position of a convex lens. Draw a ray diagram showing the formation of the image.

(b) How will the size of the image change if we, ONLY replace the lens in the above arrangement with another lens of a greater focal length?

Refraction Lens

14 Likes

Answer

(a) Ray diagram showing the formation of the image when the object is placed at 2F position of a convex lens is shown below:

State the changes in the position, size and nature of the image when the object is brought from infinity up to the convex lens. Illustrate your answer by drawing the ray diagrams. Refraction through a lens, Concise Physics Class 10 Solutions.

(b) If we ONLY replace the original lens with another lens of greater focal length then object distance (u) which was at 2F1 earlier, now comes between F1 and 2F1.

And

When an object is placed between F1 and 2F1 of the convex lens then it produces real, inverted and magnified image beyond 2F2 behind the lens.

Hence, if we, ONLY replace the original lens with another lens of a greater focal length then the size of the image increases.

Answered By

6 Likes

Related Questions