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प्रश्न
What is the ratio of the height of an image to the height of an object known as?
उत्तर
The ratio of the height of an image to the height of an object is known as linear magnification.
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संबंधित प्रश्न
What is the magnification of the images formed by plane mirrors and why?
For which positions of the object does a concave mirror produce an inverted, magnified an real image?
Define linear magnification produced by a mirror.
Write down a formula for the magnification produced by a concave mirror.
in terms of object distance and image distance
A virtual, erect and magnified image of an object is to be obtained with a convex lens. For this purpose,the object should be placed:
(a) between 2F and infinity
(b) between F and optical centre
(c) between F and 2F
(d) at F
A lens of focal length 12 cm forms an erect image three times the size of the object. The distance between the object and image is ______.
An object is placed at a distance of 100 cm from a converging lens of focal length 40 cm.
(i) What is the nature of image?
(ii) What is the position of image?
A lens of focal length 20 cm is used to produce a ten times magnified image of a film slide on a screen. How far must the slide be placed from the lens?
Magnification produced by a concave lens is always:
(a) more than 1
(b) equal to 1
(c) less than 1
(d) more than 1 or less than 1
Assertion: The focal length of the mirror is /and the distance of the object from the focus is V then the magnification of the mirror will be `("f"/"f−u")`
Reason: Magnification = `"image distance"/ "object distance"` = `(-"v"/"u")`
