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10th Class Science Sample Paper Science Olympiad Model Test Paper-18

  • question_answer
    At what distance should the object from the concave lens be placed so that it forms an image at 10 cm from the lens if the concave lens has focal length of 15 cm?

    A) 10 cm

    B) 30 cm

    C) 50 cm

    D)  80 cm

    E)  None of these

    Correct Answer: B

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