The point at which the principal axis me...

The point at which the principal axis meets the surface of the lens is ________.

centre of curvature

radius of curvature

focus

pole

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SURA PUBLICATION-OPTICS-ADDITIONAL QUESTIONS & ANSWER (Choose the Correct Answer)

When a ray of light entes glass from water, it bends .
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Where should an object be placed so that a real and inverted image of ...
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The point at which the principal axis meets the surface of the lens is...
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When a person uses a convex lens as a simple magnifying glass, the ob...
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The distance between the lens and focus is called .
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Highly enlarged image is obtained by convex lens when object is at .
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Convex lens forms a highly diminished , real and inverted image, an ob...
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Convex lenses are used in .
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Real images formed by convex lenses are always .
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An object is placed at 12 cm from a convex lens whose focal length is ...
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The image produced by a concave lens is .
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An object is placed 25 cm from a convex lens whose focal length is 10 ...
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Magnificatio produced by a lens is
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Lens formula is
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Lens formula is
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In a concave lens when an object is between optic centre and infinity ...
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The reciprocal of the focal length of the lens is .
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The image formed by retina of human eye is .
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The least distance of distinct vision is .
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The change in the focal length of human eye is caused by .
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