English

Where should an object be placed in front of a convex lens to get a real image of the size of the object?

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Question

Where should an object be placed in front of a convex lens to get a real image of the size of the object?

Options

  • At the principal focus of the lens

  • At twice the focal length

  • At infinity

  • Between the optical centre of the lens and its principal focus

MCQ
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Solution

At twice the focal length

Explanation:

The object is to be placed at twice the focal length of the lens.

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Chapter 9: Light – Reflection and Refraction - EXERCISE [Page 159]

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NCERT Science [English] Class 10
Chapter 9 Light – Reflection and Refraction
EXERCISE | Q 3. | Page 159
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