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ICSE 2019 : Refraction and Lenses: Important paper

6 pages, 51 questions, 1 questions with responses, 1 total responses,    0    0
Mohit bhatt
City Montessori School (CMS Aliganj Campus I), Lucknow
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PHYSICS SCIENCE Paper 1 REFRACTION AND LENSES (2 hours) Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 5 minutes. This time is to be spent in reading the Question Paper. The time given at the head of this Paper is the time allowed for writing the answers. ____________________________________________________________________ Attempt all the questions from Section I and Section II The intended marks for questions or parts of questions are given in brackets [ ]. SECTION I (40 Marks) Attempt all questions from this Section Question 1 (a) What do you mean by lateral displacement? Explain with the help of a labeled diagram. [2] (b) Define critical angle. How does critical angle of a medium depend upon the wavelength of incident light? [2] (c) Mention two major differences between image formation in a total reflecting prism and a plane mirror. [2] (d) How does angle of incidence depend upon angle of deviation? Explain using i- curve. [2] (e) The power of a lens is -2.D. Find the focal length and state the kind of lens. [2] Question 2 (a) Draw a ray diagram to show the application of a diverging lens as a lens used to correct myopia. [2] (b) How does refractive index depend upon: (i) Critical angle (ii) Angle of incidence [2]

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