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प्रश्न
AB is the object, A'B' is the image, and MM' is the position of the mirror. Complete the ray diagram showing the formation of the image and find the focal length of the mirror.
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उत्तर
A light ray coming from a point on object AB is reflected from the surface of the mirror, it passes through the principal focus and the other ray passing through the center of curvature strikes the mirror normally i.e. 90 degrees. Hence it will reflect back. These two reflected rays coincide at a point where the image is formed. The image, A'B' is real, inverted, and diminished in size. The focal length was found to be 16 mm.
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संबंधित प्रश्न
Give one use each of a concave and a convex mirror.
State the two kinds of spherical mirror and distinguish them with the aid of proper diagrams.
In each case (a) and (b), draw reflected rays for the given incident rays and mark focus by the symbol F.
What type of mirror can be used to obtain a real image of an object?
A concave mirror forms a real image of an object placed in front of it at a distance 30 cm, of size three times the size of object. Find
- the focal length of mirror
- position of image.
Define the following term in relation to concave mirror.
Pole
Complete the following diagrams shown in the following figures by drawing the reflected rays.
The radius of curvature of a spherical mirror is 18 cm. What is the focal length of this mirror?
Explain why a ray of light passing through the center of curvature of a concave mirror, gets reflected along with the same pattern.
