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The magnification produced by a lens is 1/2. The nature and the relative size of the image formed by the lens in the respective order is?

Areal, inverted and enlarged

Breal, inverted and diminished

Cvirtual, erect and enlarged

Dvirtual, erect and diminished

Answer:

D. virtual, erect and diminished

Read Explanation:

  • Magnification (m) = 1/2 which is positive and less than 1.

  • A positive magnification implies that the image formed is virtual and erect.

  • Since the magnification is less than 1, the image is diminished


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Which of the following statements are correct?

  1. (a). For a lens the first principal focus is the position of the object whose image is at infinity
  2. (b) For a lens the first principal focus is the position of the object whose image is formed at twice the focal length.
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  4. (d) For a lens the second principal focus is the position of the object whose image is formed at twice the focal length
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