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प्रश्न
Copy the following figure and complete it to show the formation of the image of the object AB. Name the lens used in the figure.
उत्तर
Since the ray has deviated away from the axis, the lens used is a concave lens. The complete figure showing the image formed is given alongside. The image is virtual, erect, and diminished.
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संबंधित प्रश्न
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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?
Construct ray diagrams to illustrate the formation of a virtual image using a diverging lens.
A concave lens of 20 cm focal length forms an image 15 cm from the lens. Compute the object distance.
Only one of the following applies to a concave lens. This is:
(a) focal length is positive
(b) image distance can be positive or negative
(c) height of image can be positive or negative
(d) image distance is always negative
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Express power of a concave lens of focal length 50 cm with its sign.
