MCQ Class 10 Science Chapter 10 The Human Eye And The Colourful World Advertisement MCQ’s For All Chapters – Science Class 10th 1. A person went for a medical check-up and found that the curvature of his eye lens was increasing. Which defect is he likely to suffer from?HypermetropiaMyopiaCataractPresbyopiaQuestion 1 of 152. A person gets out in the sunlight from a dark room. How does his pupil regulate and control the light entering the eye?The size of the pupil will remain the same, but less light will enter the eyeThe size of the pupil will decrease, and less light will enter the eyeThe size of the pupil will decrease, and more light will enter the eyeThe size of the pupil will remain the same, but more light will enter the eyeQuestion 2 of 153. When light rays enter the eye, most of the refraction occurs at thePupilCrystalline lensThe outer surface of the corneaIrisQuestion 3 of 154. Which of the following phenomena of light are involved in the formation of a rainbow?Reflection, refraction and dispersionRefraction, dispersion and scattering Refraction, dispersion and internal reflectionDispersion, scattering and total internal reflectionQuestion 4 of 155. The deflection of light by minute particles and molecules of the atmosphere in all directions is called ____________ of light.Tyndall effectdispersionscatteringinterferenceQuestion 5 of 156. Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?Reflection of light from the earthDispersion of lightScattering of lightTotal internal reflection of lightQuestion 6 of 157. When white light enters a glass prism from the air, the angle of deviation is least forred lightblue lightyellow lightviolet lightQuestion 7 of 158. Which option justifies that the Sun appears red at sunrise and sunset?The white light disperses into seven colours, only red enters the atmosphereRed scatters highest by the atmosphereThe distance between the sun and earth reducesRed has a high wavelength, so it travels a longer distanceQuestion 8 of 159. What type of image is formed by the eye lens on the retina?Virtual and erectVirtual and invertedReal and erectReal and invertedQuestion 9 of 1510. The amount of light entering the eye can be controlled by thecorneairispupilciliary musclesQuestion 10 of 1511. At noon, the Sun appears white aslight is least scatteredblue colour is scattered the mostred colour is scattered the mostall the colours of the white light are scattered awayQuestion 11 of 1512. Twinkling of stars is due toatmospheric refraction of starlightreflection of light by cloudsscattering of light by dust particlesdispersion of light by water dropsQuestion 12 of 1513. The splitting of white light into different colours on passing through a prism is calleddeviationreflectionrefractiondispersionQuestion 13 of 1514. A person cannot see distinctly objects kept beyond 2 m. This defect can be corrected by using a lens of power– 0.2 D+ 0.2 D+ 0.5 D– 0.5 DQuestion 14 of 1515. The clear sky appears blue becauselight of all other colours is scattered more than the violet and blue colour lights by the atmosphere.blue light gets absorbed in the atmosphere.ultraviolet radiations are absorbed in the atmosphere.violet and blue lights get scattered more than lights of all other colours by the atmosphere.Question 15 of 15 Loading...
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