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प्रश्न
How would a pencil look like if you saw it through
a concave lens Is the image real or virtual?
उत्तर
When a pencil is seen through a concave lens placed close to it, it appears smaller than it's actual size. Because a concave lens always produces a virtual image, the image formed is virtual.
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संबंधित प्रश्न
Where must the object be placed for the image formed by a converging lens to be:
real, inverted and larger than the object?
An object is placed 10 cm from a lens of focal length 5 cm. Draw the ray diagrams to show the formation of image if the lens is converging,
When a fork is seen through lenses A and B one by one, it appears as shown in the diagrams. What is the nature of (i) lens A, and (ii) lens B? Give reason for your answer.
A person finds difficulty in seeing nearby objects clearly. His vision can be corrected by using spectacles containing:
(a) converging lenses
(b) diverging lenses
(c) prismatic lenses
(d) chromatic lenses
Out of the two lenses, one concave and the other convex, state which one will show the divergent action on a light beam. Draw diagrams to illustrate your answer.
A lens forms an upright and diminished image of an object irrespective of its position. What kind of lens is this?
Explain the working of an astronomical telescope using refraction of light.
Draw images in case of a concave lens when the object is at infinity.
Convex magnifying glass is called divergent magnifying glass and concave magnifying glass is called converging magnifying glass.
Give two characteristics of the image formed by a concave lens.
