Q641
Open questionWhat is the reason for twinkling of stars ?
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Q642
Open questionThe basic reason for the extraordinary sparkle of suitably cut diamond is that
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Q643
Open questionRefractive Index of glass with respect to water is
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Q644
Open questionWhich of the following colour of light deviates least through the prism?
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Q645
Open questionBending of light rays in denser medium is termed as:
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Q646
Open questionThe absolute refractive index of any medium is always:
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Q647
Open questionLens is made up of
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Q648
Open question'Mirage' is an example of
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Q649
Open questionMirage is due to
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Q650
Open questionA water tank appears shallower when it is viewed from top due to
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Q651
Open questionThe phenomenon of change in direction of light when it passes from one medium to another is called
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Q652
Open questionThe refractive index of a transparent medium is maximum for
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Q653
Open questionWhat type of lens is a magnifying glass?
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Q654
Open questionWhich of the following is not caused by atmospheric refraction of light ?
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Q655
Open questionWhy does water tank appear shallower when viewed from the top?
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Q656
Open questionWhich one of the following processes is responsible for the glittering of air bubble rising through water?
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Q657
Open questionThe increasing order of the refractive index of certain materials is (left to right) ________
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Q658
Open questionWhich color deviates least when passing through a Prism
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Q659
Open questionWhich color deviates highest when passing through a Prism
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Q660
Open questionA pond of water appears less deep due to
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