{"id":19356,"date":"2018-01-29T10:58:22","date_gmt":"2018-01-29T10:58:22","guid":{"rendered":"https:\/\/www.aplustopper.com\/?p=19356"},"modified":"2020-11-24T10:50:37","modified_gmt":"2020-11-24T05:20:37","slug":"frank-icse-solutions-class-9-physics-light-reflection-light","status":"publish","type":"post","link":"https:\/\/www.aplustopper.com\/frank-icse-solutions-class-9-physics-light-reflection-light\/","title":{"rendered":"Frank ICSE Solutions for Class 9 Physics &#8211; Light: Reflection of Light"},"content":{"rendered":"<h2><span style=\"color: #00ccff;\"><strong>Frank ICSE Solutions for Class 9 Physics &#8211; Light: Reflection of Light<\/strong><\/span><\/h2>\n<p><span style=\"color: #00ccff;\"><strong>PAGE NO: 245<\/strong><\/span><br \/>\n<span style=\"color: #eb4924;\"><strong>Solution 1:<\/strong><\/span><br \/>\nLight may be defined as the radiant energy which produces in us the sensation of sight. Light itself is invisible but makes other objects visible.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 2:<\/strong><\/span><br \/>\nYes, light is a form of energy that produces the sensation of vision in our eyes.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 3:<\/strong><\/span><br \/>\nThe velocity of light in vacuum is 3 x 10<sup>8<\/sup> m\/s.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 4:<\/strong><\/span><br \/>\nTwo sources of light are<\/p>\n<ul>\n<li>Natural, for e.g. Sun<\/li>\n<li>Artificial, for e.g. Light bulb.<\/li>\n<\/ul>\n<p><span style=\"color: #eb4924;\"><strong>Solution 5:<\/strong><\/span><br \/>\nFour characteristics of light are :-<\/p>\n<ul>\n<li>Light waves can travel through vacuum<\/li>\n<li>Light waves are transverse waves<\/li>\n<li>Wavelength of light waves is short so that their length is measured in centi-microns.<\/li>\n<li>The velocity of light in vacuum is 3 x 10<sup>8<\/sup> m\/s.<\/li>\n<\/ul>\n<p><span style=\"color: #eb4924;\"><strong>Solution 6:<\/strong><\/span><br \/>\nThe Sun and the stars are the two luminous bodies.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 7:<\/strong><\/span><br \/>\nTwo non -luminous bodies are moon, chair.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 8:<\/strong><\/span><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84360\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-1-1.png\" alt=\"Frank ICSE Solutions for Class 9 Physics - Light Reflection of Light 1\" width=\"638\" height=\"178\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-1-1.png 638w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-1-1-300x84.png 300w\" sizes=\"(max-width: 638px) 100vw, 638px\" \/><\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 9:<\/strong><\/span><br \/>\nA ray of light is the path along which light travels.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 10:<\/strong><\/span><br \/>\nThree distinctions between light and sound waves are<\/p>\n<ul>\n<li>Light waves can travel through vacuum while sound waves cannot.<\/li>\n<li>Light waves are transverse waves while sound waves are longitudinal waves.<\/li>\n<li>The velocity of light in air is 3 x 10<sup>8<\/sup> m\/s while the speed of light in air is just about 330 m\/s.<\/li>\n<\/ul>\n<p><span style=\"color: #00ccff;\"><strong>PAGE NO : 246<\/strong><\/span><br \/>\n<span style=\"color: #eb4924;\"><strong>Solution 11:<\/strong><\/span><\/p>\n<ul>\n<li>A ray of light<\/li>\n<li>Divergent beam of light<\/li>\n<li>Divergent beam of light<\/li>\n<li>Parallel beam of light<\/li>\n<\/ul>\n<p><span style=\"color: #eb4924;\"><strong>Solution 12:<\/strong><\/span><br \/>\nThe substance through which light is made to pass is called medium.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 13:<\/strong><\/span><br \/>\nRectilinear propagation of light is that the light travels along a straight line.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 14:<\/strong><\/span><br \/>\nNo, glass is a transparent medium.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 15:<\/strong><\/span><br \/>\nNo, no metal is transparent by nature.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 16:<\/strong><\/span><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84361\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-2.png\" alt=\"Frank ICSE Solutions for Class 9 Physics - Light Reflection of Light 2\" width=\"638\" height=\"168\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-2.png 638w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-2-300x79.png 300w\" sizes=\"(max-width: 638px) 100vw, 638px\" \/><\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 17:<\/strong><\/span><br \/>\nWaxed paper is the translucent medium among the given substances.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 18:<\/strong><\/span><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84402\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-3.png\" alt=\"Frank ICSE Solutions for Class 9 Physics - Light Reflection of Light 3\" width=\"589\" height=\"408\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-3.png 589w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-3-300x208.png 300w\" sizes=\"(max-width: 589px) 100vw, 589px\" \/><\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 19:<\/strong><\/span><br \/>\nTwo observations that proves that light travels in a straight line are :-<\/p>\n<ul>\n<li>Sunlight coming through a hole in a dark room, we can easily see that light travels in a straight line<\/li>\n<li>Light coming from a laser light, used for presentation, can also be seen to travel in straight line.<\/li>\n<\/ul>\n<p><span style=\"color: #eb4924;\"><strong>Solution 20:<\/strong><\/span><br \/>\nWhen rays of light fall on a surface, they are turned back into the same medium in accordance with some definite laws. This process is known as reflection.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 21:<\/strong><\/span><br \/>\nA smooth and polished flat surface is the cause of regular surface.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 22:<\/strong><\/span><br \/>\nReflection obeys following two laws<\/p>\n<ul>\n<li>The incident ray, the reflected ray, and the normal at the point of incidence, all lie in the same plane.<\/li>\n<li>The angle of incidence and the angle of reflection are always equal.<\/li>\n<\/ul>\n<p><span style=\"color: #eb4924;\"><strong>Solution 23:<\/strong><\/span><br \/>\nThe height of plane mirror should be half of the size of the object to get a full image of the object. So for a man of height 1.6 m tall should use a 0.8m tall plane mirror.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 24:<\/strong><\/span><br \/>\nRectilinear propagation of light is that the light travels along a straight line.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 25:<\/strong><\/span><br \/>\nLateral inversion is the reversal of image experienced in a plane mirror. The image is of the same size and equidistant from the object but the left and right sides are transposed.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 26:<\/strong><\/span><br \/>\nFormation of image is the phenomenon based on laws of reflection.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 27:<\/strong><\/span><br \/>\nThe principle employed in a periscope is successive reflections from two plane mirrors.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 28:<\/strong><\/span><br \/>\nThe point at which the light is incident on the reflecting surface is called the point of incidence.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 29:<\/strong><\/span><br \/>\nAny smooth, highly polished reflecting surface is called mirror.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 30:<\/strong><\/span><br \/>\nA smooth, highly polished plane surface is called plane mirror.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 31:<\/strong><\/span><br \/>\nThe angle between the incident ray and the normal to the surface at the point of incidence is called the angle of incidence.<\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 32:<\/strong><\/span><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84403\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-4.png\" alt=\"Frank ICSE Solutions for Class 9 Physics - Light Reflection of Light 4\" width=\"570\" height=\"283\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-4.png 570w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-4-300x149.png 300w\" sizes=\"(max-width: 570px) 100vw, 570px\" \/><\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 33:<\/strong><\/span><br \/>\nGiven, angle between incident ray and mirror = 35\u00b0<\/p>\n<ul>\n<li>Angle of incidence = angle of mirror to the normal &#8211; angle between incident ray and mirror<br \/>\n= 90 &#8211; 35 = 55\u00b0<\/li>\n<li>Angle of reflection = angle of incidence = 55\u00b0<\/li>\n<li>Total angle turned = angle of incidence + angle of reflection<br \/>\n= 55 + 55 = 110\u00b0<\/li>\n<li>The angle between incident ray and reflected ray = Angle of incidence + Angle of reflection<br \/>\n= 55 + 55 = 110\u00b0<\/li>\n<\/ul>\n<p><span style=\"color: #eb4924;\"><strong>Solution 34:<\/strong><\/span><br \/>\nGiven, distance of boy from the mirror = 3 m<\/p>\n<ul>\n<li>Distance of image from mirror = distance of boy from the mirror = 3 m<br \/>\nDistance between boy and his image = distance of boy from the mirror + distance of image from mirror = 3+3 = 6 m<\/li>\n<li>Now, distance of boy from the mirror = 4 m<br \/>\nDistance of image from mirror = 4 m<br \/>\nDistance between boy and his image = distance of boy from the mirror + distance of image from mirror = 4+4 = 8 m.<\/li>\n<\/ul>\n<p><span style=\"color: #eb4924;\"><strong>Solution 35:<\/strong><\/span><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84404\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-5.png\" alt=\"Frank ICSE Solutions for Class 9 Physics - Light Reflection of Light 5\" width=\"538\" height=\"180\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-5.png 538w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-5-300x100.png 300w\" sizes=\"(max-width: 538px) 100vw, 538px\" \/><\/p>\n<p><span style=\"color: #00ccff;\"><strong>PAGE NO : 247<\/strong><\/span><br \/>\n<span style=\"color: #eb4924;\"><strong>Solution 36:<\/strong><\/span><br \/>\nTwo characteristics of image formed by plane mirror are<\/p>\n<ul>\n<li>Image is erect and virtual<\/li>\n<li>Image and object are of same size.<\/li>\n<\/ul>\n<p><span style=\"color: #eb4924;\"><strong>Solution 37:<\/strong><\/span><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84405\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-6.png\" alt=\"Frank ICSE Solutions for Class 9 Physics - Light Reflection of Light 6\" width=\"586\" height=\"256\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-6.png 586w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-6-300x131.png 300w\" sizes=\"(max-width: 586px) 100vw, 586px\" \/><\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 38:<\/strong><\/span><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84406\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-7.png\" alt=\"Frank ICSE Solutions for Class 9 Physics - Light Reflection of Light 7\" width=\"198\" height=\"211\" \/><\/p>\n<p><span style=\"color: #eb4924;\"><strong>Solution 39:<\/strong><\/span><br \/>\n<img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-84407\" src=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-8.png\" alt=\"Frank ICSE Solutions for Class 9 Physics - Light Reflection of Light 8\" width=\"572\" height=\"267\" srcset=\"https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-8.png 572w, https:\/\/www.aplustopper.com\/wp-content\/uploads\/2018\/01\/Frank-ICSE-Solutions-for-Class-9-Physics-Light-Reflection-of-Light-8-300x140.png 300w\" sizes=\"(max-width: 572px) 100vw, 572px\" \/><\/p>\n<p><a class=\"button-red\" title=\"FRANK ICSE Class 9 Physics Solutions\" href=\"https:\/\/www.aplustopper.com\/frank-icse-solutions-class-9-physics\/\">Physics<\/a><a class=\"button-blue\" title=\"FRANK ICSE Class 9 Chemistry Solutions\" href=\"https:\/\/www.aplustopper.com\/frank-icse-solutions-class-9-chemistry\/\">Chemistry<\/a><a class=\"button-blue\" title=\"FRANK ICSE Class 9 Biology Solutions\" href=\"https:\/\/www.aplustopper.com\/frank-icse-solutions-class-9-biology\/\">Biology<\/a><a class=\"button-blue\" title=\"FRANK ICSE Class 9 Maths Solutions\" href=\"https:\/\/www.aplustopper.com\/frank-icse-solutions-class-9-maths\/\">Maths<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Frank ICSE Solutions for Class 9 Physics &#8211; Light: Reflection of Light PAGE NO: 245 Solution 1: Light may be defined as the radiant energy which produces in us the sensation of sight. Light itself is invisible but makes other objects visible. Solution 2: Yes, light is a form of energy that produces the sensation [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[6442,3034,404],"tags":[6813,6840,6837,6863,6824,6839,6838,6811,6836],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v17.8 (Yoast SEO v17.8) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Frank ICSE Solutions for Class 9 Physics - Light: Reflection of Light - A Plus Topper<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.aplustopper.com\/frank-icse-solutions-class-9-physics-light-reflection-light\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Frank ICSE Solutions for Class 9 Physics - Light: Reflection of Light\" \/>\n<meta property=\"og:description\" content=\"Frank ICSE Solutions for Class 9 Physics &#8211; Light: Reflection of Light PAGE NO: 245 Solution 1: Light may be defined as the radiant energy which produces in us the sensation of sight. Light itself is invisible but makes other objects visible. 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Light: Reflection of Light PAGE NO: 245 Solution 1: Light may be defined as the radiant energy which produces in us the sensation of sight. Light itself is invisible but makes other objects visible. 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