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Date -2-22, Expt. No., Page No. 3, Chapter-16, dight, dight is a, form af energy which enables us to se, objicts. henevee a xay al light strikes a polished Suzfoce, it'bounces back. This phenomincon is known as redection., different, * Incident, :Yhe, ray a light which strikes the mirror., * Normal: Imagınary line which is perpendicular to the, paint at which the incident, ray, strikes., Reflected ray, the incident, The, yoyaflight which reflects back after, strikis the mirror., ray, * Angle ol Incidence, The andle which the incident ray makes with the normal, is known as the angle af incidence It is qenerally denated, by i., * dngle of Reflection, The angle which the reflected ray makes with the normal, is known as the angle f reflection. It is qenerally densted., by r., * Fir st daw af Reflection, The incident af incuden, land the riflected ray,- all lic in the same plonen, ray, the normal at the paint, Teacher's Signature

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Point, Incidence, Mirror, Angle f incidence, Incident Ray, Fig 16.5, Point of incidence, Mirror, in cidence, Angle af xyflection, Reflected roy, Incident ray, Fig. 16.6, Normal, Normal