Q3)which three rules are to be used while drawing the ray diagram to obtain and image of the object kept in front of the lens
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Rule 1: If the incident ray is parallel to the principal axis then the reflected ray passes through the focus of the concave mirror.
Rule 2: If the incident ray passes through the focus of the concave mirror, the reflected ray is parallel to the principle axis.
Rule 3: If the incident ray passes through the centre of curvature of the concave mirror, the reflected ray traces the same path.
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