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प्रश्न
Which type of lens forms always a virtual image?
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उत्तर
A concave lens always forms a virtual image of an object.
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संबंधित प्रश्न
An image formed by a concave ______ cannot be obtained on a screen.
A concave lens always forms a virtual image.
State two differences between a convex and a concave lens.
Explain why, a stick half immersed in water appears to be bent at the surface. Draw a labelled diagram to illustrate your answer.
Write the new Cartesian sign convention for spherical lenses.
What are the three principal rays that are drawn to construct the ray diagram for the image formed by a lens? Draw diagrams to support your answer.
A convex lens forms an image of an object equal to the size of the object. Where is the object placed in front of the lens?
A lens forms the image of an object placed at a distance 15 cm from it, at a distance 60 cm in front of it. Find the nature of image.
My grandfather uses a bifocal lens in his spectacle. Explain why.
Complete the ray diagram to show how the rays pass into and out of the lens?
