how to construct the image formed in concave mirror
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There are two alternative methods of locating the image formed by a concave mirror. The first is purely graphical, and the second uses simple algebraic analysis.
The graphical method of locating the image produced by a concave mirror consists of drawing light-rays emanating from key points on the object, and finding where these rays are brought to a focus by the mirror. This task can be accomplished using just four simple rules:
An incident ray which is parallel to the principal axis is reflected through the focus of the mirror.An incident ray which passes through the focus of the mirror is reflected parallel to the principal axis.An incident ray which passes through the centre of curvature of the mirror is reflected back along its own path (since it is normally incident on the mirror).An incident ray which strikes the mirror at its vertex is reflected such that its angle of incidence with respect to the principal axis is equal to its angle of reflection.
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The graphical method of locating the image produced by a concave mirror consists of drawing light-rays emanating from key points on the object, and finding where these rays are brought to a focus by the mirror. This task can be accomplished using just four simple rules:
An incident ray which is parallel to the principal axis is reflected through the focus of the mirror.An incident ray which passes through the focus of the mirror is reflected parallel to the principal axis.An incident ray which passes through the centre of curvature of the mirror is reflected back along its own path (since it is normally incident on the mirror).An incident ray which strikes the mirror at its vertex is reflected such that its angle of incidence with respect to the principal axis is equal to its angle of reflection.
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hey mate....
construction on concave mirror is so simple... just make two point on the principle axis.. i. e., C and F such that C = 2F
Now put your object on either side or on the both point and pass two line from object through f and pole.... actually it has 6 condition which will explain better....
so just post ur object situation... where it is placed... either beyond C, or in infinity or at C or between C and F or at F or between Fans pole. ....this will define to construct a image on any mirror..
construction on concave mirror is so simple... just make two point on the principle axis.. i. e., C and F such that C = 2F
Now put your object on either side or on the both point and pass two line from object through f and pole.... actually it has 6 condition which will explain better....
so just post ur object situation... where it is placed... either beyond C, or in infinity or at C or between C and F or at F or between Fans pole. ....this will define to construct a image on any mirror..
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