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ICSE Class 8 Physics Question 20 of 23

Light Energy — Question 16

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Question 16

State the direction of incident ray which after reflection from a spherical mirror gets reflected along its own path. Give a reason.

Answer

A ray passing through the centre of curvature of a spherical mirror is reflected along its own path.
A line joining the centre of curvature to any point on the surface of mirror is always normal to it. Thus, a ray passing through the centre of curvature is incident normally on the spherical mirror. Its angle of incidence is zero, therefore, the angle of reflection is also zero. It means that the ray gets reflected along its own path.

State the direction of incident ray which after reflection from a spherical mirror gets reflected along its own path. Give a reason. Light Energy, Concise Physics Solutions ICSE Class 8.