Human Eye and colorful world – quiz Post author:Priyank Pravasi Post published:April 13, 2021 Post category:Uncategorized Post comments:0 Comments /10 1 Created on April 13, 2021 Human Eye and colorful world - Class X 1 / 10 Which of the following phenomena of light are involved in the formation of a rainbow? Refraction, dispersion and total internal reflection Dispersion, scattering and total internal reflection Reflection, refraction and dispersion Refraction, dispersion and internal reflection 2 / 10 Twinkling of stars is due to atmospheric scattering of light by dust particles internal reflection of light by clouds dispersion of light by water droplets refraction of light by different layers of varying refractive indices 3 / 10 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 light is absorbed the most by smoke or fog. moves fastest in air. is scattered the least by smoke or fog. is scattered the most by smoke or fog. 4 / 10 The bluish colour of water in deep sea is due to the presence of algae and other plants found in water scattering of light absorption of light by the sea reflection of sky in water 5 / 10 Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset? Total internal reflection of light Scattering of light Dispersion of light Reflection of light from the earth 6 / 10 At noon the sun appears white as blue colour is scattered the most red colour is scattered the most. light is least scattered. all the colours of the white light are scattered away. 7 / 10 A person cannot see distinctly objects kept beyond 2 m. This defect can be corrected by using lens of power -1.0 D -0.5 D +0.5 D +0.2 D 8 / 10 Which of the following statements is correct regarding the propagation of light of different colours of white light in air? Red light moves fastest. Blue light moves faster than green light. Yellow light moves with the mean speed as that of the red and the violet light. All the colours of the white light move with the same speed. 9 / 10 A student sitting on the last bench can read the letters written on the blackboard but is not able to read / the letters written in his textbook. Which of the following statements is correct? The near point of his eyes has come closer to him. The far point of his eyes has come closer to him. The near point of his eyes has receded away. The far point of his eyes has receded away. 10 / 10 The clear sky appears blue because violet and blue lights get scattered more than lights of all other colours by the atmosphere. blue light gets absorbed in the atmosphere. ultraviolet radiations are absorbed in the atmosphere. light of all other colours is scattered more than the violet and blue colour lights by the atmosphere. Your score is The average score is 30% LinkedIn Facebook Twitter VKontakte 0% Please Share This Share this content Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window You Might Also Like Laws of refraction June 23, 2020 Grouping of two cells in series and parallel June 21, 2020 AC circuit containing only ohmic resistance June 22, 2020 Leave a Reply Cancel replyYou must be logged in to post a comment.