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Explore 31 free The Human Eye and the Colourful World questions in Uttarakhand Board Class 10 Physics. Each question opens with answer choices, the correct answer and a worked solution.
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Showing questions 1–30 of 31.
The transparent front layer of the human eye is called the:Read the answer and worked solution →The image of an object is formed on the:Read the answer and worked solution →The least distance of distinct vision for a healthy adult human eye is about:Read the answer and worked solution →Power of accommodation of the eye is the ability of the eye lens to:Read the answer and worked solution →White light splits into its colours when passed through a prism. This phenomenon is called:Read the answer and worked solution →Which defect of vision is corrected by a concave lens?Read the answer and worked solution →Which defect of vision is corrected by a convex lens?Read the answer and worked solution →In the human eye, the size of the pupil is controlled by the:Read the answer and worked solution →Why does the sky appear blue during the day?Read the answer and worked solution →A near-sighted person can see only objects nearer than:Read the answer and worked solution →Power of a corrective lens is expressed in dioptres. One dioptre equals:Read the answer and worked solution →Presbyopia is caused by:Read the answer and worked solution →Which of the following causes night blindness?Read the answer and worked solution →A person can read a book at 30 cm but cannot read it at 25 cm. The defect is:Read the answer and worked solution →A myopic person uses a lens of focal length -1.5 m. The power of this lens is:Read the answer and worked solution →The splitting of white light by a prism into colours is due to:Read the answer and worked solution →Why does a hypermetropic eye have its near point farther than 25 cm?Read the answer and worked solution →A myopic eye can be corrected by:Read the answer and worked solution →The phenomenon of bending of light caused by gas density variations in the atmosphere is called:Read the answer and worked solution →Why are danger signals such as stop lights and fire engines coloured red?Read the answer and worked solution →Two convex lenses of focal lengths 20 cm and 50 cm are placed in contact. The power of the combination is:Read the answer and worked solution →Which of the following causes the colour of the clear sky to appear blue at noon?Read the answer and worked solution →The Tyndall effect refers to the:Read the answer and worked solution →A boy can see distant objects clearly but cannot read his textbook held at 25 cm. He suffers from:Read the answer and worked solution →Why do planets NOT twinkle though stars do?Read the answer and worked solution →The bluish colour scattered toward the sides of a sunbeam is described by:Read the answer and worked solution →A person cannot see distinctly objects kept beyond 2 m. This defect can be corrected by using a lens of powerRead the answer and worked solution →At noon the sun appears white asRead the answer and worked solution →Which of the following phenomena contributes significantly to the reddish appearance of the sun at sunrise or sunset?Read the answer and worked solution →The bluish colour of water in deep sea is due toRead the answer and worked solution →
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