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Geometrical Optics question

2022 · 28 Jul · Shift 1 · Q61
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  5. /2022 · 28 Jul · Shift 1 · Q61

Geometrical Optics question

2022 · 28 Jul · Shift 1 · Q61

JEE MainPhysicsGeometrical OpticsMCQ+4 / −1
In normal adujstment, for a refracting telescope, the distance between objective and eye piece is 30 cm30 \mathrm{~cm}30 cm. The focal length of the objective, when the angular magnification of the telescope is 2 , will be :
  1. A
    20 cm
  2. B
    30 cm
  3. C
    10 cm
  4. D
    15 cm
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