10th Class Science Solved Paper - Science-2017 Outside Delhi Set-I

  • question_answer
    Study the given ray diagram and select the correct statement from the following:
    (a) Device X is a concave mirror and device Y is a convex lens, whose focal lengths are 20 cm and 25 cm respectively.
    (b) Device X is a convex lens and device Y is a concave mirror, whose focal lengths are 10 cm and 25 cm respectively.
    (c) Device X is a concave lens and device Y is a convex mirror, whose focal length are 20 cm and 25 cm respectively.
    (d) Device X is a convex lens and device Y is a concave mirror, whose focal length are 20 cm and 25 cm respectively.
     

    Answer:

    (d) Device X is a convex lens and device Y is a concave mirror, whose focal lengths are 20 cm and 25 cm respectively.  


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