a concave mirror of focal length 12 cm is placed at a distance of 60cm from a wall . How far from the wall an object be placed so that its sharp image formed by the mirror falls on the wall ?
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Answer:
Here, f =-10cm; v =-35 cm (since the image is formed on the wall and distance between the wall and mirror is 35cm).
Image is beyond 2f so object has to be in between F and C.
Let the distance of the object from the wall be x.
Therefore, the distance of the object from the wall = 21 cm.
Explanation:
Here, f =-10cm; v =-35 cm (since the image is formed on the wall and distance between the wall and mirror is 35cm).
Image is beyond 2f so object has to be in between F and C. Let the distance of the object from the wall be x.
Therefore, the distance of the object from the wall = 21 cm.
Hope it will help you
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