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प्रश्न
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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उत्तर
Pole: “The geometric centre of a spherical mirror is called POLE.”
Concave mirror Convex mirror
“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 ‘
Concave mirror Convex mirror
Radius of curvature: “The radius of a hollow sphere of which the mirror is a part”. It is represented by ‘R’
Concave mirror Convex mirror
Principal axis: “Is a straight line joining the pole of the mirror to its centre of curvature and extended further.”
Concave mirror Convex mirror
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संबंधित प्रश्न
A virtual image larger than the object can be produced by a ______.
A ray of light is incident normally on a plane mirror. What will be the:
- angle of incidence?
- angle of reflection?
A concave lens produces an image 20 cm from the lens of an object placed 30 cm from the lens. The focal length of the lens is:
(a) 50 cm
(b) 40 cm
(c) 60 cm
(d) 30 cm
Define the terms pole, principal axis and centre of curvature with reference to a spherical mirror.
At what distance from a concave mirror of focal length 25 cm should an object be placed so that the size of image is equal to the size of the object.
Select the correct option:
Looking into a mirror one finds her image diminished, the mirror is:
The following figure shows a concave mirror with its pole (P), focus (F), and center of curvature (C). Draw a ray diagram to show the formation of the image of an object AB by the concave mirror.
A concave mirror can be used to produce a parallel beam of light. Draw a ray to illustrate this.
Spherical mirrors are one form of ______ mirrors.
In the figure shown, the image of a real object is formed at the point I. AB is the principal axis of the mirror. The mirror must be:
