Question
Download Solution PDFA point on the principal axis of a concave mirror, from where a ray of light reflects back without any deviation, is:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is center of curvature .
Key Points
- The centre of the sphere formed by the reflecting part of a spherical mirror is called centre of curvature.
- A ray passing through the centre of curvature of a concave mirror, after reflection, is reflected along the same path.
- The light rays come back along the same path because the incident rays fall on the mirror along the normal to the reflecting surface.
Additional Information
- The incident rays coming parallel to the principal axis after reflection appear to converge to a common point on the principal axis, this point is called the principal focus of a concave mirror.
- The image formed at infinity is highly diminished, point size, real and inverted.
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