An astronomical telescope arranged for normal adjustment has a magnification of 6. If the length of the telescope is 35 cm, then the focal lengths of objective and eye-piece rspectively, are

Options

(a) 30 cm, 5 cm
(b) 5 cm, 30 cm
(c) 40 cm, 5 cm
(d) 30 cm, 6 cm

Correct Answer:

30 cm, 5 cm

Explanation:

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