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प्रश्न
Give two characteristic of the image formed by a concave lens.
उत्तर
Image formed by a concave lens is virtual and diminished.
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संबंधित प्रश्न
Things always look small on viewing through a lens. What is the nature of the lens?
Which type of lens is :
a converging lens, and which is
When an object is placed 10 cm in front of lens A, the image is real, inverted, magnified and formed at a great distance. When the same object is placed 10 cm in front of lens B, the image formed is real, inverted and same size as the object.
What is the nature of lens A?
When an object is placed 10 cm in front of lens A, the image is real, inverted, magnified and formed at a great distance. When the same object is placed 10 cm in front of lens B, the image formed is real, inverted and same size as the object.
What is the nature of lens B?
An object is placed at a distance of 4 cm from a concave lens of focal length 12 cm. Fine the position and nature of the image.
The power of a converging lens is 4.5 D and that of a diverging lens is 3 D. The power of this combination of lenses placed close together is :
(a) +1.5D
(b) +7.5D
(c) −7.5D
(d) −1.5D
Name one of the common defects of vision and the type of lens used to remove it.
Complete the following sentence:
A short-sighted person cannot see ............ objects clearly. Short-sightedness can be corrected by using ........... lenses.
Draw images in case of a concave lens when the object is at any point on the principal axis between the lens and infinity.
Distinguish between Concave lens and Convex Lens.
