(x) Then, measure CB' and A'B'. Hence, the number of images will be 35. A concave lens of focal length 15 cm forms an image 10 cm from the lens. (xi) Thus the final position, nature and size of the image A'B' are:         (a) Position of image A'B' = 3.3 cm × 5 = 16.5 cm from the lens on opposite side. Copyright © 2020: 2Classnotes.com |. (ix) The AB is position of object. Direct and Inverse Proportions Class 8 NCERT Book, Animal Right Essay | Essay on Animal Right for Students and Children in English, Water Conservation Slogans | Unique and Catchy Water Conservation Slogans in English, Slogans on Pollution | Unique and Catchy Slogans on Pollution in English, Maths Formulas for Class 11 PDF Download Free | 11th Std Maths Formulae List, Maths Formulas for Class 6 | List of 6th Class Math Formulae, Maths Formulas for Class 9 PDF Free Download | Important 9th Grade Maths Formulae, Maths Formulas for Class 8 PDF Download Free | 8th Grade Math Formula List, Maths Formulas for Class 7 PDF Download Free | 7th Class Math Formulae, Basic Chemistry Formulas Sheet | Important Chemistry Formula Chart & Tables, Physics Formulas – Definition, Equations, Examples, https://www.youtube.com/watch?v=nd-0HFd58P8. 232, Block C-3, Janakpuri, New Delhi, This sideways reversal of the image is known as lateral inversion.Fig.

Drawing the ray diagram: Using a scale of 1: 5, we get v = - 2 cm, f = - 3 cm. 1. (iii) Mark points F and B on the left side of lens at a distance of 3 cm and 2 cm respectively. Find the position of the image, its nature and size. Answer: The number of images formed by mirrors at an angle is n = (360/0) — 1 where 0 = angle between the mirrors. (v) Draw a line AD parallel to principal axis and then, allow it to pass straight through the focus (F') on the right side of the lens. Class 8 > Science > Light Worksheets Sample CBSE Class 8 Science Light Worksheet Questions. A virtual and erect image of height 2.2 cm is formed behind the mirror (because v is positive) at a distance of 8.6 cm from the mirror. (ii) Centre line is shown by DE. NCERT Solution for Class 8 Science Chapter, NCERT Solutions for Class 8 Science Solutions, 11th CBSE NCERT Chemistry Mid Term Exam Set B (2019-20), Wastewater Story: 7th Class NCERT CBSE Science Ch 18, Forests: Our Lifeline – 7th NCERT CBSE Science Ch 17, Water: A Precious Resource – 7 Class CBSE Science Ch 16, Light: 7th Class NCERT CBSE Science Chapter 15. This continues till no more reflection by either mirror is possible. Magnification, m = h'h = -vu ∴ Image size,                         h' = -vhu                              =-(-54)×(+7)(-27)= -14 cm The image is real, inverted and enlarged in size.


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