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प्रश्न
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
उत्तर
Less than 1:
Magnification= `"size of the image"/"size of the object "`
From the formula, it is clear that the magnification varies directly with the size of the image. The image formed by a concave mirror is always smaller than the size of the object. Therefore, the magnification of a concave mirror is always less than 1.
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संबंधित प्रश्न
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(a) Suggest the type of mirror he should use.
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(d) Draw ray diagram to show the image formation in this case
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(b) Where must the object be placed to give a virtual images three times the height of the object?
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When an object is placed at a distance of 36 cm from a convex lens, an image of the same size as the object is formed. What will be the nature of image formed when the object is placed at a distance of:
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In order to obtain a magnification of, –3 (minus 3) with a convex lens, the object should be placed:
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The power of a lens is +4D. Find the focal length of this lens. An object is placed at a distance of 50 cm from the optical centre of this lens. State the nature and magnification of the image formed by the lens and also draw a ray diagram to justify your answer.
