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A small telescope has an objective of focal length 140 cm and an eye piece of focal length 5.0 cm . The magnifying power of telescope for viewing a distant object is:

Option 1 -

34       

Option 2 -

28

Option 3 -

17

Option 4 -

32

0 1 View | Posted 2 months ago
Asked by Shiksha User

  • 1 Answer

  • A

    Answered by

    alok kumar singh | Contributor-Level 10

    2 months ago
    Correct Option - 2


    Detailed Solution:

    f0=140 cm and fe=5 cm

    For distant object,

    m = f 0 f e = 1 4 0 5 = 2 8

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