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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
- Mirage' is a phenomenon due to
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- A lens when immersed in a transparent liquid becomes invisible. Under ...
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- Glittering of diamond is due to
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- An endoscope is employed by a physician to view the internal parts of...
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- A wire mesh consisting of very small squares is viewed at a distacne o...
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- A lens is made of flint glass(refractive index=1.5).When the lens is i...
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- A thin glass (refractie index = 1.5) lens has optical power of -5 D in...
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- Two thin lenses of focal length f1 and f2 are placed in contant .The f...
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- Two lenses of power +12 D and -2D are combined together.What is their ...
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- If two lenses of power +1.5 D and +1.0 D are placed in contact ,then t...
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- Flash light equipped witha new set of bateries,produces bright white ...
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- The angle of a prism is 6^@ and its refractive index for green light i...
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- The sky appears blue, because.
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- One cannot see through fog, because:
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- A leaf which contains only green pigments is illuminated by a laser li...
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- Fraunhofer lines of the solar system is an example of
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- A doctor advises a patient to use spectacles with a convx lens of foca...
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- A person using a lens as a simple microscope sees a
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- The focal length of the objective and eye piece of a telescope are res...
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- A telescope has an objective lens of focal length 200 cm and an eye pi...
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