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SURA PUBLICATION-OPTICS-ADDITIONAL QUESTIONS & ANSWER (Choose the Correct Answer)
- 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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- The phenomena of light responsible for the working of the human eye is
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- Amount of light entering into the eye is controlled by .
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- The part of the eye refracts light entering the eye from external obje...
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