Match the following: Column I Column II (i) Near point (a) Visually impaired people (ii) Reflection (b) Submarines (iii) Braille (c) Beautiful form watcher (iv) Periscope (d) 25 cm (v) Kaleidoscope (e) i = r

(i) Near point - (d) 25 cm A normal eye is unable to see the objects placed closer than 25 cm because the ciliary muscles of eyes are unable to contract beyond a certain limit. (ii) Reflection - (e) i = r Law of reflection states that the angle of incidence ( i ) and angle of reflection ( r ) are equal. Law of reflection also states that the incident ray, the normal and the reflected ray all lie in the same plane. (iii) Braille - (a) visually impaired people The braille system is the most popular aid available for visually challenged people. This aid uses the sense of touch to enable visually challenged people to read. (iv) Periscope - (b) Submarines The main use of periscope is in submarines that remain underwater. It uses multiple reflections to see overhead. (v) Kaleidoscope - (c) Beautiful form watcher The kaleidoscope is an instrument or toy containing inclined plane mirrors which produce multiple reflections of coloured glass pieces (or coloured plastic pieces) and create beautiful patterns. Column I Column II (i) Near point (d) 25 cm (ii) Reflection (e) i = r (iii) Braille (a) Visually impaired people (iv) Periscope (b) Submarines (v) Kaleidoscope (c) Beautiful form watcher

E M B I B E

Expanded Universal Science>Chapter 16 - More about Light>ASSESSMENT ZONE>Q C

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IMPORTANT

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In multiple reflections, the maximum numbers of images that can be formed are fifty.

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Important Questions on More about Light

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8th CBSE

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Expanded Universal Science>Chapter 16 - More about Light>ASSESSMENT ZONE>Q C

Intake of vitamin A is good for eyes.

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8th CBSE

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Expanded Universal Science>Chapter 16 - More about Light>ASSESSMENT ZONE>Q C

Rub your eye if something gets into it.

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8th CBSE

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Expanded Universal Science>Chapter 16 - More about Light>ASSESSMENT ZONE>Q D

Match the following:

Column I	Column II
(i) Near point	(a) Visually impaired people
(ii) Reflection	(b) Submarines
(iii) Braille	(c) Beautiful form watcher
(iv) Periscope	(d) $25 cm$
(v) Kaleidoscope	(e) $i = r$