In a concave mirror, when an object is at infinity, the image is _____.
2021
In a concave mirror, when an object is at infinity, the image is _____.
- A.
at C
- B.
at F
- C.
beyond C
- D.
at infinity
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Correct answer: B
When an object is at infinity, the rays reaching a concave mirror are nearly parallel to the principal axis. After reflection, these parallel rays converge at the principal focus F. Thus, the image is formed at F; it is real, inverted and highly diminished.