Multiple Choice Questions on A10 mm long awl pin is placed vertically in front of a concave mirror A 5 mm long image of the awl p........... for 10th Standard Preparation

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Multiple Choice Questions

A10 mm long awl pin is placed vertically in front of a concave mirror A 5 mm long image of the awl p...........

Physics Chapter - 10
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    A10 mm long awl pin is placed vertically in front of a concave mirror. A 5 mm long image of the awl pin is formed at 30 cm in front of the mirror. The focal length of this mirror is 

    30 cm

    Incorrect Answer

    20 cm

    Correct Answer

    40 cm

    Incorrect Answer

    60 cm

    Incorrect Answer
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    Explanation:

    Given h0 = +10 mm = + 0.1 cm
    h2 = – 5 mm = -0.5 cm
    for real image, v = – 30 cm

    By: santosh
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