NCERT Solutions of Light - Reflection and Refraction Class 10
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Light: Reflection and Refraction

Reflection of rays from a spherical mirror:

(A) Reflection of Rays parallel to Principal Axis:

In the case of concave mirror:- A Ray parallel to principal axis passes through the principal focus after reflection from a concave mirror.

Concave Mirror - Reflection of parallel ray Concave Mirror - Reflection of parallel rays

Similarly, all parallel rays to the principal axis pass through the principal focus after reflection from a concave mirror. Since, a concave mirror converge the parallel rays after reflection, thus a concave mirror is also known as converging mirror.

In the case of convex mirror:- A ray parallel to principal axis appears to diverge from the principal focus after reflecting from the surface of a convex mirror.

Concave Mirror - Reflection of ray parallel to Principal axis Concave Mirror - Reflection of rays parallel to Principal axis

Similarly, all rays parallel to the principal axis of a convex mirror appear to diverge or coming from principal focus after reflection from a convex mirror. Since, a convex mirror diverges the parallel rays after reflection, thus it is also known as diverging mirror.

(B) Reflection of ray passing through the Principal Focus:

In the case of concave mirror: Ray passing through the principal focus goes parallel to principal axis after reflection in the case of concave mirror.

Concave Mirror - Reflection of ray passing through F Concave Mirror - Reflection of rays diverging from F

In the case of convex mirror:- A ray directed towards principal focus goes parallel to principal axis after reflecting from the surface of a convex mirror.

(C)Ray passing through the Centre of curvature:

In the case of concave mirror:- Ray passing through the centre of curvature returns at the same path after reflecting from the surface of a concave mirror.

Concave Mirror - Reflection of ray passing through C Concave Mirror - Reflection of rays diverging from C

In the case of convex mirror: Ray appears to passing through or directed towards the centre of curvature goes parallel to the principal axis after reflecting from the surface of a convex mirror.

(D) Ray incident obliquely to the principal axis: Ray obliquely to the principal axis goes obliquely after reflecting from the pole of the both concave and convex mirror and at the same angle.

Concave Mirror - Reflection of ray incident obliquely to principal axis Concave Mirror - Reflection of ray incident obliquely to principal axis
         
NCERT Solutions of Light - Reflection and Refraction Class 10
<< Reflection of Light Through Plane and Spherical MirrorsFormation of Image by a concave mirror >>

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