2. Questions Bank
  3. 8th Class
  4. Science
  5. Light

8th Class Science Light Question Bank Light HOTS Subjective Problems

  • question_answer
    A needle 1.5 cm is placed at a distance of 20 cm from a concave mirror of focal length 15 cm. At what distance from the mirror should a screen be placed in order to receive a sharp image.

    Answer:

    60 cm


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