SELECT * FROM question_mgmt as q WHERE id=3769 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=9 AND subId=16 AND chapterId=261 and ex_no='5' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 10th science Light - Reflection and Refraction a doctor has prescribed a corrective lens of power

Question:

A doctor has prescribed a corrective lens of power +1.5 D. Find the focal length of the lens. Is the prescribed lens diverging or converging?

Answer:

Given,

Power of lens = + 1.5 D

A convex lens has a positive focal length.Therefore , it is a convex lens or a converging lens.


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