Question

To determine the approximate focal length of the given convex lens by focussing a distant object (say, a sign board), you try to focus the image of the object on a screen. The image you obtain on the screen is always : (a) erect and laterally inverted (b) erect and diminished (c) inverted and diminished (d) virtual, inverted and diminished

Answer 1

Answer:

the answer is C the image will be always inverted and diminish if the object is at distant from convex lens

Answer 2

Answer:

correct option is c: inverted and diminished

Explanation:

To find the focal length of a convex lens  we can use distant object method.

so object will be at infinity and informed formed will be at focus.

nature of image :

• image is formed at F
• real
• inverted
• diminished

refer the attachment for diagram