CBSE Class 10 The Human Eye and the Colourful World — practice questions
38 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 10 The Human Eye and the Colourful World in the app →The light-sensitive layer at the back of the eyeball is the:Most of the refraction of light entering the eye occurs at the:The size of the pupil is controlled by the:The ability of the eye to focus on objects at different distances by adjusting the focal length of the lens isThe least distance of distinct vision for a young adult is approximately:The far point of a normal eye is:Myopia is corrected using a:Hypermetropia is corrected using a:Presbyopia arises because:A bifocal lens used for presbyopia + myopia has:A myopic person has a far point of 1 m. The focal length of the corrective concave lens is:A hypermetropic person has a near point of 1 m. The focal length of the corrective convex lens is:The splitting of white light into its constituent colours by a prism is called:The correct sequence of colours in a rainbow (top to bottom of the bow) is:Newton showed that white light can be reformed from the spectrum using:A rainbow always forms in the sky:The twinkling of stars is due to:Planets do not twinkle as much as stars because:The Sun appears reddish at sunrise and sunset because:The blue colour of the sky is best explained by:In a young eye, the focal length range of the eye lens is approximately:Why is the Sun visible 2 minutes before sunrise and 2 minutes after sunset?A person can see only objects between 0.5 m and 2 m clearly. Which lenses (in order: distance, near) should thInside a prism, violet light deviates more than red because:The phenomenon of dispersion was first scientifically demonstrated by:A converging lens of focal length 1 m corrects a myopic person's vision. Is this correct?Tyndall effect refers to:Power of accommodation cannot reduce the focal length below a certain value because:A myopic person's far point is 50 cm. The corrective lens has power:Cataract refers to:Why don't the planets twinkle but stars do?A 10-cm-tall object placed 30 cm in front of a 20-cm concave mirror has an image at:The eye lens is described as which type of biconvex structure?Why must we hold a book about 25 cm away to read it comfortably?Scattering of light is most pronounced when the wavelength of light is:The image formed on the retina by the human eye is:A child cannot read words on the blackboard clearly. The likely defect and correction are:The apparent flattening of the Sun's disc at sunset is due to: