This article present the general Glossary of Mirror and lens and step by step method to solve Mirror and Lens problems<\/p>\n\n\n\n
Plane Mirror<\/strong> Concave or Converging Mirrors<\/strong> Convex or Diverging Mirrors<\/strong> Convex lens<\/strong> Concave lens<\/strong><\/p>\n\n\n\n It is also called diverging lens because spreads light out<\/p>\n\n\n\n Real Image<\/strong> Virtual Image<\/strong> Step 1) The concept of flats mirror,concave mirror\/lens and convex mirror\/lens should be clear. The formula used are Mirror equation\/lens maker equation and Magnification equation. Step 1)Do the first lens as if the others weren\u2019t there. Question (1)<\/strong><\/p>\n\n\n\n An object is placed 25 cm in front of a concave mirror of focal length 60 cm. Calculate the image distance and the magnification. Characterize the image.<\/p>\n\n\n\n Question (2) <\/strong><\/p>\n\n\n\n An object is placed 25 cm in front of a convex mirror of focal length 30 cm. Calculate the image distance and the magnification. Characterize the image.<\/p>\n\n\n\n Question (3) <\/strong><\/p>\n\n\n\n Two plane mirrors are inclined to one another at an angle 30. A ray traveling in the plane as shown below is incident on one of the mirrors. Applying the Law of Reflection, show that the path of the ray after the two reflections is deviated by an angle which is independent of the angle of incidence.<\/p>\n\n\n\n Question (4) <\/strong><\/p>\n\n\n\n Ram obtains a blurred image of an object on the screen by using the concave mirror, In order to obtain sharp sharp image on the screen, he will have to shift the mirror Question (5) <\/strong><\/p>\n\n\n\n Refractive index of media A, B, C and D are In which of the four media is the speed of light (i) maximum (ii) minimum?<\/p>\n\n\n\n Question (6) <\/strong><\/p>\n\n\n\n An object of size 5 cm is kept at a distance of 25 cm from the optical center of a converging lens of Question (7) <\/strong><\/p>\n\n\n\n Explain reasons for each of the following: Question (8) <\/strong><\/p>\n\n\n\n How does the speed of light change as the index of refraction increases?<\/p>\n\n\n\n Question (9) <\/strong><\/p>\n\n\n\n How does the size of the critical angle change as the index of refraction increases?<\/p>\n\n\n\n Question (10) <\/strong><\/p>\n\n\n\n Could an index of refraction ever be less than 1? What would this imply about the speed of light in that medium?<\/p>\n\n\n\n Question (11) <\/strong><\/p>\n\n\n\n A 2.25-cm-tall object is 8.5 cm to the left of a convex lens of 5.5-cm focal length. Find the image position and height<\/p>\n\n\n\n Question (12)<\/strong><\/p>\n\n\n\n Does your bathroom mirror show you older or younger than your actual age?<\/p>\n\n\n\n Question (13) <\/strong><\/p>\n\n\n\n A concave makeup mirror is designed so that a person 25 cm in front of it sees an upright image magnified by a factor of 2. What is the radius of curvature of the mirror?<\/p>\n","protected":false},"excerpt":{"rendered":" Glossary of Mirror and Lenses<\/p>\n Plane Mirror Concave or Converging Mirrors Convex or Diverging Mirrors<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[24],"tags":[],"class_list":["post-1513","post","type-post","status-publish","format-standard","hentry","category-general"],"yoast_head":"\n
A plane mirror is a mirror with a planar reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence.It always form virtual image<\/p>\n\n\n\n
A curved mirror that has its center farther away from you than its edges is called a concave mirror. A concave mirror tends to reflect parallel rays through a point called its focus – in other words a concave mirror converges light. Therefore concave mirrors are often referred to as converging mirrors. This converging effect makes sense if you imagine a concave mirror to be an array of small plane mirrors.You can demonstrate the converging of parallel light rays by a concave mirror quite dramatically for yourself. A relatively small concave mirror placed in the sun will gather enough light to ignite a small piece of paper quite quickly<\/p>\n\n\n\n
It is a curved mirror that has its center closer to you than its edges is called a convex mirror.A convex mirror tends to reflect parallel rays so that they spread out, or diverge. For this reason, convex mirrors are often referred to as diverging mirrors. This diverging effect makes sense if you think of a convex mirror as an array of small plane mirrors.<\/p>\n\n\n\n
It is also called converging lens, real or virtual rays come together at a point<\/p>\n\n\n\n
when light really comes together-will show up on a screen<\/p>\n\n\n\n
light rays not really coming together-never on a screen<\/p>\n\n\n\nHow to solve the Mirror and Lens Problems<\/strong><\/span><\/h2>\n\n\n\n
Step 2) The sign convention and ray diagram should also be clear
Step 3) Read the Problem statement clearly and find out the clues in the problem. Find the known and unknown variable. This step is crucial and you need to apply the sign convention also.
Step 4) Draw a ray diagram. The more careful you are in constructing this, the better idea you’ll have of where the image is.
Step 5) Apply the appropriate equation to determine the unknown. You may have solve two simultaneous equation in some case.
Step 6) The result of the steps 4 and 5 are consistent with each other.<\/p>\n\n\n\nHow to solve Multiple Lenses Problem<\/strong><\/span><\/h2>\n\n\n\n
Step 2)Use the image formed by this lens as the object of the next lens
step 3)Repeat this process for all the lenses in the system
Step 4)The total magnification is just the product of the individual magnifications of each lens.<\/p>\n\n\n\nSome Mirror and Lens Problems<\/strong><\/span><\/h2>\n\n\n\n
(a)to a position very far from screen
(b)towards the screen
(c) away from the screen
(d) either away or towards depending on the position of the object<\/p>\n\n\n\n
A 1.31
B 1.52
C 1.45
D 1.64<\/p>\n\n\n\n
focal length 10cm. Calculate the distance of the image from the lens and size of the image.<\/p>\n\n\n\n
(i) The sky appears to be blue during day time to a person on earth.
(ii) The sky near the horizon appears to have a reddish heu at the time of sunset and sunrise.
(iii) The sky appears dark instead of blue to an astronaut.
(iv) The stars appears to twinkle.
(v) The planets do not twinkle.<\/p>\n\n\n\n
\nA plane mirror is a mirror with a planar reflective surface. For light rays striking a plane mirror, the angle of reflection equals the angle of incidence.It always form virtual image<\/p>\n
\nA curved mirror that has its center farther away from you than its edges is called a concave mirror. A concave mirror tends to reflect parallel rays through a point called its focus – in other words a concave mirror converges light. Therefore concave mirrors are often referred to as converging mirrors. This converging effect makes sense if you imagine a concave mirror to be an array of small plane mirrors.You can demonstrate the converging of parallel light rays by a concave mirror quite dramatically for yourself. A relatively small concave mirror placed in the sun will gather enough light to ignite a small piece of paper quite quickly<\/p>\n