A concave lens makes a/an image formed at the principal focus ( $F_{1}$ ) when an object is at infinity.

highly diminished

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enlarged

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same size

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Solution

The correct option is A highly diminished
When an object is placed at infinity in front of a concave lens, a highly diminished image is formed at the principal focus (F $_{1}$ ).

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Similar questions

When an object is placed at the principal focus of a concave mirror, the image is formed at...............

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

(a) At the principal focus of the lens

(b) At twice the focal length

(d) Between the optical centre of the lens and its principal focus.

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