MCQ Class 10 Science Chapter 10 The Human Eye And The Colourful World Advertisement MCQ’s For All Chapters – Science Class 10th 1. One cannot see through the fog, becauselight suffers total reflection at dropletsrefractive index of the fog is very highlight is scattered by the dropletsfog absorbs lightQuestion 1 of 192. Refraction of light by the earth’s atmosphere due to variation in air density is calledatmospheric refractionatmospheric reflectionatmospheric dispersionatmospheric scatteringQuestion 2 of 193. The air layer of atmosphere whose temperature is less then the hot layer behave as opticallyeither denser or rarer mediumdenser mediumrarer mediuminactive mediumQuestion 3 of 194. The colour that is scattered the least by the tiny particles and the atoms/ molecules of the atmosphere isRedVioletGreenyellowQuestion 4 of 195. The image formed on the retina of the human eye isvirtual and erectvirtual and invertedreal and invertedreal and erectQuestion 5 of 196. When a person is myopic, he/ she can clearly seeNeither nearby nor far off objectsboth nearby and far off objectsOnly nearby objectsonly far off objectsQuestion 6 of 197. The defect of myopia can be corrected by usingA complicated combination of lenses.Concave lensConvex lensEither concave or convexQuestion 7 of 198. Which of the following phenomenon contributes significantly to the reddish appearance of the sun at sunrise or sunset?Reflection of light from the earthDispersion of lightScattering of lightTotal internal ReflectionQuestion 8 of 199. Which of the following is a natural phenomenon which is caused by the dispersion of sunlight in the sky?RainbowTwinkling of starsStars seem higher than they actually areAdvanced sunrise and delayed sunsetQuestion 9 of 1910. The medical condition in which the lens of the eye of a person becomes progressively cloudy resulting in blurred vision is calledcataractmyopiahypermetropiapresbyopiaQuestion 10 of 1911. The least distance of distinct vision for a normal eye is25 minfinity25 cm2.5 cmQuestion 11 of 1912. The defect of vision in which a person cannot see the distant objects clearly but can see nearby objects clearly is calledbifocal eyemyopiahypermetropiapresbyopiaQuestion 12 of 1913. The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red lightmoves fastest in airis scattered the most by smoke or fogis absorbed the most by smoke or fogis scattered the least by smoke or fogQuestion 13 of 1914. When white light enters a prism, it gets split into its constituent colours. This is due toScattering of lightdifferent refractive index for different wavelength of each coloureach colours has same velocity in the prism.prism material have high density.Question 14 of 1915. The change in focal length of an eye lens is caused by the action of theIrisPupilCiliary musclesRetinaQuestion 15 of 1916. The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due toFar-sightednessPresbyopiaAccommodationNear-sightednessQuestion 16 of 1917. Bi-focal lens are required to correctpresbyopiaastigmatismcomamyopiaQuestion 17 of 1918. The ability of eye lens to adjust its focal length to form a sharp image of the object at varying distances on the retina is calledPower of enabling of the eyePower of adjustment of the eyePower of observation of the eyePower of accommodation of the eyeQuestion 18 of 1919. The muscular diaphragm that controls the size of the pupil isretinacorneaciliary musclesirisQuestion 19 of 19 Loading...
Leave a Reply