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At which positions of the objects do spherical mirrors produce 

(i) diminished image 

(ii) magnified image?

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1 Answers

i. Amongst the two types of spherical mirrors, convex mirror always produces a diminished image at all positions of the object.

ii. Concave mirror produces diminished image when object is placed :

  • Beyond radius of curvature (i.e., u > 2f) 
  • At infinity (i.e., u = ∞)

 iii. Concave mirror produces magnified image when object is placed :

  • between centre of curvature and focus (i.e., 2f > u > f) 
  • between focus and pole of the mirror (i.e., u < f)
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