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प्रश्न
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उत्तर
Linear magnification is defined as the ratio of the height of the image to the height of the object. It is taken to be positive for an image to be virtual and erect and negative when the image is real and inverted.
Magnification produced by a concave mirror is:
Magnification = height of image / height of object.
It is a pure ratio and does not have any units.
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संबंधित प्रश्न
An image formed by a ______ mirror is always of the same size as that of the object.
We can obtain a real, enlarged and inverted image by a concave mirror.
Name the spherical mirror which can produce a real and diminished image of an object.
A ray of light travels from a denser medium to a rarer medium. How will it bend?
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.
Define the following terms in the context of spherical mirrors :
(i) Pole
(ii) Centre of curvature
(iii) Radius of curvature
(iv) Principal axis
Name the spherical mirror which (i) diverges (ii) converges the beam of light incident on it. Justify your answer by drawing a ray diagram in each case.
Discuss the position and nature of image formed by a concave mirror when an object is moved from infinity towards the pole of mirror.
Define focal length.
What is the difference between virtual images of an object formed by a concave mirror and a convex mirror?
