{"id":5431,"date":"2024-05-23T06:30:04","date_gmt":"2024-05-23T05:30:04","guid":{"rendered":"https:\/\/mcqsadda.com\/?p=5431"},"modified":"2024-05-23T08:10:31","modified_gmt":"2024-05-23T07:10:31","slug":"light-set-3","status":"publish","type":"post","link":"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-3\/","title":{"rendered":"Light Set &#8211; 3"},"content":{"rendered":"\n<h1 class=\"wp-block-heading has-text-align-right has-vivid-purple-color has-text-color has-link-color has-larger-font-size wp-elements-b7139a39044109c13ddc963a0ca83362\"><a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-2\/\" title=\"\">Prev<\/a>       <strong><a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/22\/light-set-1\/\" title=\"\">1<\/a>        <a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-2\/\" title=\"\">2<\/a>        <a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-3\/\" title=\"\">3<\/a><a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/04\/noun-set-3\/\" title=\"\"> <\/a>       <a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-4\/\" title=\"\">4<\/a>       <a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/06\/noun-set-5\/\" title=\"\"> <\/a><a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-5\/\" title=\"\">5<\/a><\/strong>       <a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-4\/\" title=\"\">Next<\/a><\/h1>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-vivid-green-cyan-background-color has-background has-text-align-left wp-element-button\" href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-quiz-3\/\">mock test<\/a><\/div>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>21. The centre of the reflecting surface of a sperical mirror is called the _______.<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong>Pole<\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. <strong>Radius<\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. <strong><strong><strong><strong><strong><strong>Centre of curvature<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. <strong><strong><strong><strong>Focus<\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER:A<BR>\nSOLUTION :The centre of the reflecting surface of a spherical mirror is known as the pole.\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>22. When light waves pass from air to glass the variable affected are ________.<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong><strong><strong><strong><strong>Wavelength, frequency and velocity<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. Velocity and frequency<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. Wavelength and frequency<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. Wavelength and  V<strong><strong>elocity<\/strong><\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER:D<BR>\nSOLUTION:When a light ray enters from rarer to denser (air to glass) medium wavelength and velocity will get affected. As the ray bends in passing through different media which results in a decrease in wavelength. The velocity also decreases.\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>23. Which of the following statement is true ?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong><strong><strong><strong><strong><strong><strong><strong><strong><strong><strong>The light has a greater velocity<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. <strong>The sound has the greatest velocity<\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. Celestial objects have the greatest velocity&nbsp;&nbsp;&nbsp;<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. <strong><strong>Rocket has the greatest velocity<\/strong><\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER:A<BR>\nSOLUTION:The light has a greater velocity.\n  <\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>24. What will be the size of image formed by a concave mirror when an object placed between pole and focus ?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A.  Same size <\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. <strong><strong><strong><strong>Enlarged<\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. <strong><strong><strong><strong>Point size <\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. Diminished<\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER:B<BR>\nSOLUTION:A highly enlarged image is formed at infinity if the object is at the focus of a concave mirror.\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>25. The magnifying glass is ________.<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong><strong>Convex lens<\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. <strong><strong>Convex mirror<\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. <strong><strong><strong><strong><strong>Concave lens<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. <strong><strong>Concave mirror<\/strong><\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER:A<BR>\nSOLUTION:A magnifying glass is a convex lens, used to make objects appear larger than they actually are. While using a magnifying glass, the distance between object and glass is kept shorter than the focal length of the lens.\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>26. For normal eyes what is the minimum distance for clear vision?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong><strong><strong><strong><strong><strong>10 cm<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. 15 cm<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. <strong>20 cm<\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. <strong><strong><strong><strong><strong><strong>25 cm<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER:D<BR>\nSOLUTION :The minimum distance for a clear vision of a normal human eye is 25 cm. It is also known as the least distance of distinct vision or near the point of an eye. The human eye is a specialized sense organ that is capable of receiving visual images and then carried to the brain.<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>27. The correct relation between the radius of curvature R and focal length f of a spherical mirror is ______.<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong><strong><strong><strong><strong><strong>R = f<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. <strong><strong><strong><strong><strong><strong><strong><strong><strong>R = 2f<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. <strong><strong>R = 3f<\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. &nbsp;<strong><strong><strong><strong><strong><strong><strong><strong>R = 4f<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER:B<BR>\nSOLUTION:The corret relation between the radius of curvature (R) and the focal length(f) is given by, R=2f.\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>28. Rainbow is seen after rain because of hanging molecules of water which act as __________.<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong><strong><strong><strong><strong><strong><strong><strong><strong><strong>Lenses<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. <strong><strong><strong>Prism<\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. M<strong><strong><strong><strong><strong><strong><strong><strong><strong><strong>irrors<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. <strong><strong><strong>M<strong><strong><strong><strong><strong><strong><strong><strong><strong><strong>irrors<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER:B<BR>\nSOLUTION: Since the prism also splits the white light into its constituent colors. Similarly, water droplets suspended in the air also acts as a prism for the light falling on their surfaces. Hence, we see a rainbow in the sky after the rainfall.\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>29. What is the distance between the focal point or focus point in the lens and the vision center or optical center?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong><strong><strong><strong><strong><strong>Radius of curvature<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. <strong>Principal line<\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. Focal length<\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. <strong><strong><strong><strong><strong>Focus<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER:C<BR>\nSOLUTION: The distance between the optical center of a lens and its focal point is called the focal length. It&#8217;s an important measurement in determining the magnifying power and image formation of a lens or mirror. The symbol, f, represents the focal length.\n<\/p>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>30. In a concave mirror when the object is placed at infinity which of the following applies to the image ?<\/strong><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>A. <strong><strong><strong><strong><strong><strong>Real, inverted image of the same size at centre of curvature<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>B. <strong><strong><strong>Real, inverted, highly diminished image at focus<\/strong><\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>C. <strong><strong>Real, inverted highly enlarged image at centre of curvature<\/strong><\/strong><\/strong><\/h3>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>D. <strong><strong>Real, inverted, diminished image between centre of curvature (c) and principal focus (F)<\/strong><\/strong><\/strong><\/h3>\n\n\n\n<button class=\"acc\">ANSWER &#038; SOLUTION<\/button>\n<div class=\"pnl\">\n  <p>ANSWER:B<BR>\nSOLUTION: Whenever the object is placed at infinity in a concave mirror it produces a real, inverted and highly diminished image at the focus.\n <\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-16018d1d wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-vivid-green-cyan-background-color has-background has-text-align-left wp-element-button\" href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-quiz-3\/\">mock test<\/a><\/div>\n<\/div>\n\n\n\n<h1 class=\"wp-block-heading has-text-align-right has-vivid-purple-color has-text-color has-link-color has-larger-font-size wp-elements-b7139a39044109c13ddc963a0ca83362\"><a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-2\/\" title=\"\">Prev<\/a>       <strong><a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/22\/light-set-1\/\" title=\"\">1<\/a>        <a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-2\/\" title=\"\">2<\/a>        <a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-3\/\" title=\"\">3<\/a><a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/04\/noun-set-3\/\" title=\"\"> <\/a>       <a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-4\/\" title=\"\">4<\/a>       <a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/06\/noun-set-5\/\" title=\"\"> <\/a><a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-5\/\" title=\"\">5<\/a><\/strong>       <a href=\"https:\/\/mcqsadda.com\/index.php\/2024\/05\/23\/light-set-4\/\" title=\"\">Next<\/a><\/h1>\n","protected":false},"excerpt":{"rendered":"<p>Prev 1 2 3 4 5 Next 21. The centre of the reflecting surface of a sperical mirror is called the _______. A. Pole B. Radius C. Centre of curvature D. Focus ANSWER &#038; SOLUTION ANSWER:A SOLUTION :The centre of the reflecting surface of a spherical mirror is known as the pole. 22. When light<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[3115,3119,3117,3109,3116,3114,3118,3112,3110,3111],"class_list":{"0":"post-5431","1":"post","2":"type-post","3":"status-publish","4":"format-standard","6":"category-physics","7":"tag-for-normal-eyes-what-is-the-minimum-distance-for-clear-vision","8":"tag-in-a-concave-mirror-when-the-object-is-placed-at-infinity-which-of-the-following-applies-to-the-image","9":"tag-rainbow-is-seen-after-rain-because-of-hanging-molecules-of-water-which-act-as-__________","10":"tag-the-centre-of-the-reflecting-surface-of-a-sperical-mirror-is-called-the-_______","11":"tag-the-correct-relation-between-the-radius-of-curvature-r-and-focal-length-f-of-a-spherical-mirror-is-______","12":"tag-the-magnifying-glass-is-________","13":"tag-what-is-the-distance-between-the-focal-point-or-focus-point-in-the-lens-and-the-vision-center-or-optical-center","14":"tag-what-will-be-the-size-of-image-formed-by-a-concave-mirror-when-an-object-placed-between-pole-and-focus","15":"tag-when-light-waves-pass-from-air-to-glass-the-variable-affected-are-________","16":"tag-which-of-the-following-statement-is-true"},"_links":{"self":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/5431","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/comments?post=5431"}],"version-history":[{"count":2,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/5431\/revisions"}],"predecessor-version":[{"id":5490,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/posts\/5431\/revisions\/5490"}],"wp:attachment":[{"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/media?parent=5431"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/categories?post=5431"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mcqsadda.com\/index.php\/wp-json\/wp\/v2\/tags?post=5431"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}