General Science

EnglishUPPCS (Mains) 2015

Q2281.Which one of the following phenomenon is used in optical fibres?

AInterference BRefraction CTotal internal reflection DPolarisation

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EnglishHimachal Pradesh PSC (Pre) 2017 RAS/RTS (Pre) 2012

Q2282.In fibre optics communication, the signal travels in the form of

ALight wave BRadio wave CMicro wave DElectric wave

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EnglishUP Lower Sub. (Pre) 2009

Q2283.‘Endoscope’ used by the doctors for examining the inside of patient’s stomach, works on the principle of

AReflection of light BDispersion of light CRefraction of light DTotal internal reflection of light

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EnglishUPPSC (RI) 2014

Q2284.An endoscope is a

ANarrow telescope BType of camera CSimple microscope DNone of the above

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EnglishUPPCS (Pre) 2012, 1995

Q2285.The reason of mirage is

AInterference of light BDiffraction of light CPolarization of light DTotal internal reflection of light

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EnglishUPPCS (Mains) 2014 UP UDA/LDA (Pre) 2013 UP Lower Sub. (Mains) 2013

Q2286.Mirage formation is an example of

ARefraction BDispersion CTotal internal reflection DDiffraction

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EnglishUPPCS (Mains) 2012 UPPCS (Pre) 1996

Q2287.The diamond appears lustrous because of

AReflection BRefraction CTotal internal reflection DScattering

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EnglishIAS (Pre) 1994

Q2288.What is the reason behind the extraordinary shining of the diamond cuts in a proper way?

ABecause it has a higher transparency BBecause it has a higher refractive index CBecause it is so hard DBecause it has a fixed deviation floors

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EnglishUPPCS (Mains) 2015

Q2289.A cut diamond shines brilliantly due to

ATotal internal reflection BAbsorption of light CSome inherent property DIts molecular structure

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EnglishRAS/RTS (Pre) 1999, 1996

Q2290.The technique to integrate and mark the image of a three dimensional object is

AAudiography BLexieography CPhotography DHolography

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EnglishUPPCS (Mains) 2008 UPPCS (Pre) 1990

Q2291.Which of the following is used to take 3-dimensional pictures?

APhotography BHolography CRadiography DNone of these

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EnglishRAS/RTS (Pre) 1994, 95

Q2292.The generating images on a screen by focusing an electronic beam on phosphorus coated screen is called

AMaster Scan BTotal Scan CRoster Scan DRadar Scan

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EnglishRAS/RTS (Pre) 1992

Q2293.‘Raman effect’ deals with the light rays passing through

AOnly fluids BOnly prisms COnly diamonds DAll transparent medium

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EnglishIAS (Pre) 2000

Q2294.For reproducing sound, a CD (Compact Disc) audio player uses a

AQuartz crystal BTitanium needle CLaser beam DBarium titanic ceramic

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EnglishIAS (Pre) 2000

Q2295.When a CD (Compact disc used in audio and video systems) is seen in Sunlight, rainbow-like colours is seen. This can be explained on the basis of the phenomenon of

AReflection and diffraction BReflection and transmission CDiffraction and transmission DRefraction, diffraction and transmission

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EnglishUPPSC (GIC) 2010 UPPCS (Pre) 1994

Q2296.Television signals cannot be received beyond a certain distance because

ASignals are weak BAntenna is weak CAir absorbs signals DThe surface of the Earth is curved

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EnglishUPPCS (Mains) 2007 IAS (Pre) 1995

Q2297.The technique used to transmit auto signals in television broadcasts is

AAmplitude Modulation BFrequency Modulation CPulse Code Modulation DTime Division Multiplexing

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EnglishUPPCS (Spl)(Mains) 2004 UPPCS (Pre) 1995

Q2298.The image formed on Retina is

AEqual to object but inverted BSmaller than object but straight CSmaller than object but inverted DEqual to object but straight

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EnglishTamil Nadu PSC (Pre) 2019 Chhattisgarh PCS (Pre) 2015

Q2299.Which type of image of an object is formed by eye lens of the retina?

AErect and Real BErect and Virtual CInverted and Real DInverted and Virtual

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EnglishRAS/RTS (Pre) 1994, 95

Q2300.The principle reason why it is better to have two eyes than one is that

ABy having two eyes we can distinguish colour easily BBy having two eyes we can easily see in the dark as well in dim light CIt gives a man a type of vision known as mosaic vision DIt enhances distance and depth perception in us

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