Q721
Open questionWhich Color has the Longest Wavelength?
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Q722
Open questionThe colour of sky appears blue due to
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Q723
Open questionSun appears red in colour at sunrise and sunset due to
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Q724
Open questionTotal number of colours exists in sunlight
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Q725
Open questionWhen white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is
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Q726
Open questionRainbows are produced when sunlight :
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Q727
Open questionRed light is used for signals because it has
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Q728
Open questionWhy does the sea appear blue in colour?
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Q729
Open questionThe sky appears blue because
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Q730
Open questionDuring washing of clothes, we use indigo due to its
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Q731
Open questionWhich one of the following instruments is used to study dispersion of light ?
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Q732
Open questionWhich one of the following is responsible for the working of Newton's colour disc experiment ?
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Q733
Open questionAn object which absorbs all colours and reflects none appears:
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Q734
Open questionMicrophone is a device which transforms the
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Q735
Open questionConversion of heat into electrical energy is achieved by using :
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Q736
Open questionHow much calorie of energy is released by a boiled egg ?
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Q737
Open questionA stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum:
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Q738
Open questionA 4 kg object is moving horizontally with a speed of 5 m/s. To increase its speed to 10 m/s, the amount of net work required to be done on this object is:
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Q739
Open questionGasoline is useful in cars because it has
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Q740
Open questionElectric Motor converts ________ energy to mechanical energy
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