An object is placed 40 cm in front of a lens as shown below. |
A plane mirror is placed 30 cm behind the lens. Focal length of lens is |
I. There are in all three images. |
II. Two of images are erect. |
III. Two of images are inverted. |
IV. Two of images are of same size. |
Which of the above statements are correct? |
A) Statements I and IV are correct
B) Statements II and IV are correct
C) Statements I, II and IV are correct
D) Statements I, III and IV are correct
Correct Answer: D
Solution :
Ray diagram for given situation is |
First image A 'B' is formed by lens. Image of A"B" is formed in plane mirror as A"B". Image of A" B" is formed by lens as A'?B". |
Note That this is real and erect. |
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