Q38 / 54 · KVPY 2017 (5 Nov SA) · Physics

The word "KVPY' 'is written on a board and viewed through different lense such that board is at a distance beyond the focal length of the lens. Figure
Ignorging magnification effects, consider the following statements (I) Image (i) has been viewed from the planar side of a plano-convex lens and image (ii) from the convex, side of a plano-convex lens. (II) Image (i) has been vieved from the concave side of a plano-concave lens and image (ii) from the planar side of a plano-convex lens. (iii) Image (i) has been vieved from the cocave side of a plano-concave lens and image (ii) from the planar side of a plano-convex lens. (iv) Image (i) has been viewed from the planar side of a plano-concave lens and image (ii) from the convex side of a plano-convex lens. Which of the above statements are correct?

  • A
    All four.
  • B
    Only (III).
  • C
    Only (IV).
  • Correct answer
    D
    Only (II), (III) and (IV).

Solution

(i) For plano-concave lens or concave lens if object is placed beyond focus image is erected (ii) For convex lens If object is placed beyond focus image is inverted

Hence, the correct answer is option: 'D'.

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