{"id":1547,"date":"2020-07-09T19:48:06","date_gmt":"2020-07-09T19:48:06","guid":{"rendered":"https:\/\/murreeroad.org\/physics10\/?p=1547"},"modified":"2020-10-18T23:24:12","modified_gmt":"2020-10-18T18:24:12","slug":"physics-10th-chapter-12-numerical-problems","status":"publish","type":"post","link":"https:\/\/murreeroad.org\/physics10\/physics-10th-chapter-12-numerical-problems\/","title":{"rendered":"Physics 10th chapter 12 Numerical Problems"},"content":{"rendered":"

Chapter 12 Geometrical Optics Numerical Problems<\/strong><\/span><\/p>\n

Q. 12.1. An object 10.0 cm in front of a convex mirror forms an image 5.0 cm behind the mirror. What is the focal length of the mirror?<\/a><\/strong><\/p>\n

Q.12.2 An object 30 cm tall is located 10.5 cm from a concave mirror with focal length 16 cm. (a) Where is the image located? (b) How high is it?<\/a><\/strong><\/p>\n

Q.12.3 An object and its image in a concave mirror are of the same height, yet inverted, when the object is 20 cm from the mirror. What is the focal length of the mirror?\u00a0<\/a><\/strong><\/p>\n

Q.12.4 Find the focal length of a mirror that forms an image 5.66 cm behind the mirror of an object placed at 34.4 cm in front of the mirror. Is the mirror concave or convex?<\/a><\/strong><\/p>\n

Q.12.5 An image of a statue appears to be 11.5 cm behind a concave mirror with focal length 13.5 cm. Find the distance from the statue to the mirror.\u00a0<\/a><\/strong><\/p>\n

Q.12.6 An image is produced by a concave mirror of focal length 8.7 cm. The object is 13.2 cm tall and at a distance 19.3 cm from the mirror. <\/a><\/strong><\/p>\n

(a) Find the location and height of the image. <\/strong><\/p>\n

(b) Find the height of the image produced by the mirror if the object is twice as far from the mirror.\u00a0<\/strong><\/p>\n

Q.12.7 Nabeela uses a concave mirror when applying makeup. The mirror has a radius of curvature of 38 cm.<\/a><\/strong><\/p>\n

(a) What is the focal length of the mirror? <\/strong><\/p>\n

(b) Nabeela is located 50 cm from the mirror. Where will her image appear?<\/strong><\/p>\n

(c) Will the image be upright or inverted?\u00a0<\/strong><\/p>\n

Q.12.8 An object 4 cm high is placed at a distance of 12 cm from a convex lens of focal length 8 cm. Calculate the position and size of the image. Also state the nature of the image.\u00a0<\/a><\/strong><\/p>\n

Q.12.9 An object 10 cm high is placed at a distance of 20 cm from a concave lens of focal length 15 cm. Calculate the position and size of the image. Also, state the nature of the image.\u00a0<\/a><\/strong><\/p>\n

Q.12.10 A convex lens of focal length 6 cm is to be used to form a virtual image three times the size of the object. Where must the lens be placed?\u00a0<\/a><\/strong><\/p>\n

Q.12.11 A ray of light from air is incident on a liquid surface at an angle of incidence 35 . Calculate the angle of refraction if the refractive index of the liquid is 1.25. Also calculate the critical angle between the liquid air inter-face.\u00a0<\/a><\/strong><\/p>\n

Q.12.12 The power of a convex lens is 5 D. At what distance the object should be placed from the lens so that its real and 2 times larger image is formed.\u00a0<\/a><\/strong><\/p>\n

<\/a>Q. 12.1. An object 10.0 cm in front of a convex mirror forms an image 5.0 cm behind the mirror. What is the focal length of the mirror?<\/strong><\/p>\n

\"\"<\/p>\n

<\/a>Q.12.2 An object 30 cm tall is located 10.5 cm from a concave mirror with focal length 16 cm. (a) Where is the image located? (b) How high is it?<\/strong><\/p>\n

\"\"<\/p>\n

<\/a>Q.12.3 An object and its image in a concave mirror are of the same height, yet inverted, when the object is 20 cm from the mirror. What is the focal length of the mirror?\u00a0<\/strong><\/p>\n

\"\"<\/p>\n

<\/a>Q.12.4 Find the focal length of a mirror that forms an image 5.66 cm behind the mirror of an object placed at 34.4 cm in front of the mirror. Is the mirror concave or convex?<\/strong><\/p>\n

\"\"<\/p>\n

<\/a>Q.12.5 An image of a statue appears to be 11.5 cm behind a concave mirror with focal length 13.5 cm. Find the distance from the statue to the mirror.\u00a0<\/strong><\/p>\n

\"\"<\/p>\n

<\/a>Q.12.6 An image is produced by a concave mirror of focal length 8.7 cm. The object is 13.2 cm tall and at a distance 19.3 cm from the mirror. <\/strong><\/p>\n

(a) Find the location and height of the image. <\/strong><\/p>\n

(b) Find the height of the image produced by the mirror if the object is twice as far from the mirror.\u00a0<\/strong><\/p>\n

\"\"<\/p>\n

<\/a>Q.12.7 Nabeela uses a concave mirror when applying makeup. The mirror has a radius of curvature of 38 cm.<\/strong><\/p>\n

(a) What is the focal length of the mirror? <\/strong><\/p>\n

(b) Nabeela is located 50 cm from the mirror. Where will her image appear?<\/strong><\/p>\n

(c) Will the image be upright or inverted?\u00a0<\/strong><\/p>\n

\"\"<\/p>\n

<\/a>Q.12.8 An object 4 cm high is placed at a distance of 12 cm from a convex lens of focal length 8 cm. Calculate the position and size of the image. Also state the nature of the image.\u00a0<\/strong><\/p>\n

\"\"<\/p>\n

<\/a>Q.12.9 An object 10 cm high is placed at a distance of 20 cm from a concave lens of focal length 15 cm. Calculate the position and size of the image. Also, state the nature of the image.\u00a0<\/strong><\/p>\n

\"\"<\/p>\n

<\/a>Q.12.10 A convex lens of focal length 6 cm is to be used to form a virtual image three times the size of the object. Where must the lens be placed?\u00a0<\/strong><\/p>\n

\"\"<\/p>\n

 <\/p>\n

<\/a>Q.12.11 A ray of light from air is incident on a liquid surface at an angle of incidence 35 . Calculate the angle of refraction if the refractive index of the liquid is 1.25. Also calculate the critical angle between the liquid air inter-face.\u00a0<\/strong><\/p>\n

\"\"<\/p>\n

<\/a>Q.12.12 The power of a convex lens is 5 D. At what distance the object should be placed from the lens so that its real and 2 times larger image is formed.\u00a0<\/strong><\/p>\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

Chapter 12 Geometrical Optics Numerical Problems Q. 12.1. An object 10.0 cm in front of a convex mirror forms an image 5.0 cm behind the mirror. What is the focal length of the mirror? Q.12.2 An object 30 cm tall is located 10.5 cm from a concave mirror with focal length 16 cm. (a) Where… Read More »Physics 10th chapter 12 Numerical Problems<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"off","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":""},"categories":[9],"tags":[],"_links":{"self":[{"href":"https:\/\/murreeroad.org\/physics10\/wp-json\/wp\/v2\/posts\/1547"}],"collection":[{"href":"https:\/\/murreeroad.org\/physics10\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/murreeroad.org\/physics10\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/murreeroad.org\/physics10\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/murreeroad.org\/physics10\/wp-json\/wp\/v2\/comments?post=1547"}],"version-history":[{"count":3,"href":"https:\/\/murreeroad.org\/physics10\/wp-json\/wp\/v2\/posts\/1547\/revisions"}],"predecessor-version":[{"id":2038,"href":"https:\/\/murreeroad.org\/physics10\/wp-json\/wp\/v2\/posts\/1547\/revisions\/2038"}],"wp:attachment":[{"href":"https:\/\/murreeroad.org\/physics10\/wp-json\/wp\/v2\/media?parent=1547"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/murreeroad.org\/physics10\/wp-json\/wp\/v2\/categories?post=1547"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/murreeroad.org\/physics10\/wp-json\/wp\/v2\/tags?post=1547"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}