A convex lens has a focal length of 10cm. What is the power of the lens?

20D

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10D

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Solution

The correct option is C
10D

f = 10cm = 0.1m

Therefore p = 1 / f

= 1 / 0.1

= 10 D.

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A convex lens has a focal length of 10cm. What is the power of the lens?

The correct option is C 10D f = 10cm = 0.1m Therefore p = 1 / f = 1 / 0.1 = 10 D.

The correct option is C
10D

f = 10cm = 0.1m

Therefore p = 1 / f

= 1 / 0.1

= 10 D.