Calculate the focal length of a convex l...

Calculate the focal length of a convex lens which produces a virtual image at a distance of 50 cm of an object placed 20 cm in front of it.

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33.3 cm

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LAKHMIR SINGH & MANJIT KAUR-REFRACTION OF LIGHT-Exercise

A small object is so placed in front of a convex lens of 5cm focal len...
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Find the position and nature of the image of an object 5 cm high and 1...
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Calculate the focal length of a convex lens which produces a virtual i...
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A convex lens produces an inverted image magnified three times of an o...
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An object 5 cm in length is held 25 cm away from a converging lens of ...
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At what distance should an object be placed from a convex lens of foca...
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The filament of a lamp is 80 cm from a screen and a converging lens fo...
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An erect image 2.0 cm high is formed 12 cm from a lens, the object bei...
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Determine how far an object must be placed in front of a converging le...
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a) An object 3 cm high is placed 24 cm away from a convex lens of foca...
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a) Find the nature, position and magnification of the images formed by...
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A spherical mirror and a thin spherical lens have each a focal length ...
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