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प्रश्न
Which type of lens is
a diverging lens? Explain your answer with diagrams.
उत्तर
The lens which diverges a parallel beam of light passing through it is known as a diverging lens. A concave lens is a diverging lens. The ray diagram below shows the parallel light rays getting diverged when passed through a concave lens.
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संबंधित प्रश्न
A converging lens of focal length 5 cm is placed at a distance of 20 cm from a screen. How far from the lens should an object be placed so as to form its real image on the screen?
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 diverging.
Construct ray diagrams to illustrate the formation of a virtual image using a converging lens,
The power of a concave lens is 10 D and that of a convex lens is 6 D. When these two lenses are placed in contact with each other, the power of their combination will be :
(a) +16 D
(b) +4 D
(c) −16 D
(d) −4 D
Explain the working of an astronomical telescope using refraction of light.
Draw neat diagram to show the
Divergent action of concave lens
An object is placed at a distance of 60 cm from a concave lens of focal length 30 cm.
(i) Use the lens formula to find the distance of the image from the lens.
(ii) List four characteristics of the image (nature, position, size, erect/inverted) formed by the lens in this case.
(iii) Draw a ray diagram to justify your answer of the part (ii).
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.
Distinguish between Concave lens and Convex Lens.
