Question

A convex lens of focal length 100 cm and a concave lens of focal length 50 cm are combined. Find the power of the combination, with appropriate signs and units.

Answer 1

Answer:

written below-

Explanation:

GIVEN- A convex lens of focal length 100 cm and a concave lens of focal length 50 cm

FIND- the power of the combination, with appropriate signs and units.

SOLUTION-

f = 1/1.5 = 2/3 = + 0.67 m. The focal length is + 0.67m. The nature of lens is converging type or convex lens. The defect of the eye is Hyperopia or far-sightedness..

FINAL ANSWER- o.67

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