Here is the answer to your query:-
Consider a ray of light AB, parallel to the principal axis, incident on a spherical mirror at point B. The normal to the surface at point B is CB and CP = CB = R, is the radius of curvature. The ray AB, after reflection from mirror will pass through F (concave mirror) or will appear to diverge from F (convex mirror) and obeys law of reflection, i.e., i = r.
From the geometry of the figure,
If the aperture of the mirror is small, B lies close to P, BF = PF
or FC = FP = PF
or PC = PF + FC = PF + PF
or R = 2 PF = 2f
yes they can.
hope this answer useful to you mate
answer as follows.
General rules for image formation using ray diagrams:
Any ray of light that passes through the mirror, is always parallel to the principal axis.
Any ray of light that passes through the mirror always passes through the principal focus (f) of the mirror after reflection.
A ray of light passing through the center of curvature of any mirror is reflected back along the same path.
Any incident ray which isn’t parallel to the principal axis is also reflected diagonally and the incident ray and the reflected ray always follow the laws of reflection i.e. the angles formed by these rays are equal to each other.
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Is a point on the principal axis at which the light ray incident parallel to the principal axis meet after reflection from the mirror .
FOCAL LENGTH : the distance between focus and pole FP is focal length for concave mirror.
FOR CONVEX MIRROR :
focus: of a convex mirror is a point on its principal axis at which the light ray incident parallel to the principal axis appear to meet after reflection from the mirror .
Focal length : The distance between p and f is FL.