Rules To Obtain Images By A Spherical Mirror and Image Formation By A Concave Mirror

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Rules To Obtain Images By A Spherical Mirror

1. Incident rays parallel to the principal axis pass or appear to pass from focus after reflection.
2. Incident rays which pass from focus after reflection becomes parallel to the principal axis.
3. Incident rays which pass through the Center of Curvature of the spherical mirror after reflection retrace its path.
4. Incident rays rays that are traveling obliquely to the principal axis are reflected obliquely after striking the pole of the spherical mirror.

Image Formation By A Concave Mirror

When an object is at infinity, then,

• Position of image- Image is formed at the principal focus of spherical mirror i.e At Focus.
• Size of the image- Image which is formed in the case is point sized i.e highly diminished
• Nature of Image- Image is real and we all know that every real image is inverted, i.e Image is Real and Inverted.

When the object is beyond the Center of Curvature, then,

• Position of image- Image is formed between the Center of Curvature and the Focus of spherical mirror i.e Between C and F.
• Size of the image- The image which is formed in this case is smaller than the size of the object i.e Diminished
• Nature of Image- Image is real and we all know that every real image is inverted, i.e Image is Real and Inverted.

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the centre of the reflecting surface of a spherical mirror is called the pole of the mirrorwrite the rules for images through spherical mirror and draw the ray diagram

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