Question

The intermediate image is formed at such a distance that it lies on principal axis of eyepiece 



At principal focus

Between centre of curvature and principal focus

Between principal focus and optical centre

At centre of curvature

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Answer 1

Answer:

Radius of curvature: The distance between optical centre and centre of curvature is called the radius of curvature, which is generally denoted by R. Focal Length: The distance between optical centre and principal focus is called focal length of a lens.