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Explain the following terms : Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors - Physics

Answer in Brief

Explain the following terms : 
Pole, Centre of curvature, Radius of curvature, Principal axis. Show them on separate diagrams for each of the concave and convex mirrors

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Solution

POLE: “The geometric centre of a spherical mirror is called POLE.”

“The midpoint of aperture AB of the mirror is called pole.”
P is pole of mirror.
CENTRE OF CURVATURE: “The centre of a hollow sphere of which the mirror forms a part.” It is represented by the symbol ‘ C ‘

RADIUS OF CURVATURE: “The radius of a hollow sphere of which the mirror is a part”. It is represented by ‘R’

PRINCIPAL AXIS: “Is a straight line joining the pole of the mirror to its centre of curvature and extended further.”

Concept: Terms Related to Curved Mirrors:Focus, Principal Axis, Centre of Curvature, Radius of Curvature
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APPEARS IN

Selina Concise Physics Class 8 ICSE
Chapter 5 Light Energy
Short/long Answer Question | Q 26 | Page 100
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