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A converging lens has a focal length of 50 cm. The power of this lens is:

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Question

A converging lens has a focal length of 50 cm. The power of this lens is:

Options

  • +0.2D

  • −2.0D

  • +2.0D

  • −0.2D

MCQ
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Solution

 +2.0 D 

Power `=1/"focal length"=1/0.5=+2D` 

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Chapter 2: Refraction of Light - Exercise 7 [Page 133]

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Lakhmir Singh Physics [English] Class 10
Chapter 2 Refraction of Light
Exercise 7 | Q 32. | Page 133
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