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Q.

Object - A is at a distance 2f from a positive lens of focal length f, and Object - B is at f/2 from the lens. On the other side of the lens there is a flat mirror laying parallel to and coincide with the optical axis of the lens. Find the positions of the final images and the magnifications of the two objects. Also determine whether the images are real or virtual, then answer the following.

Question Image

Location of the image of an object A and its nature

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a

Forms at 2f and virtual 

b

Forms at ‘f’ and real

c

Forms at 2f and real 

d

Forms at ‘f’ and virtual

answer is A.

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Detailed Solution

Given that
 

Question Image

From above ray diagram we can have real image of A is forming at 2F & same size of object.

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Object - A is at a distance 2f from a positive lens of focal length f, and Object - B is at f/2 from the lens. On the other side of the lens there is a flat mirror laying parallel to and coincide with the optical axis of the lens. Find the positions of the final images and the magnifications of the two objects. Also determine whether the images are real or virtual, then answer the following.Location of the image of an object A and its nature