{"id":3545,"date":"2023-10-05T11:26:07","date_gmt":"2023-10-05T11:26:07","guid":{"rendered":"http:\/\/localhost\/ecole9ja\/?p=3545"},"modified":"2023-10-05T11:32:41","modified_gmt":"2023-10-05T11:32:41","slug":"week-1-ss2-third-term-physics-notes","status":"publish","type":"post","link":"https:\/\/ecolebooks.com\/nigeria\/posts\/week-1-ss2-third-term-physics-notes\/","title":{"rendered":"Week 1 &#8211; SS2 Third Term Physics Notes"},"content":{"rendered":"<p><strong>THIRD TERM E-LEARNING NOTE<br \/>\n<\/strong><br \/>\n\u00a0<strong>SUBJECT:  PHYSICS\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0  CLASS:  SS2<br \/>\n<\/strong><br \/>\n\u00a0<strong>SCHEME OF WORK<br \/>\n<\/strong><br \/>\n\u00a0<strong>WEEK \u00a0\u00a0\u00a0\u00a0TOPICS<br \/>\n<\/strong>1. Reflection of light on plane surfaces, laws of reflection, image formation by plane mirror, \u00a0\u00a0\u00a0\u00a0\u00a0application of reflection on plane mirror<br \/>\n2.  Reflection on curved mirrors-types, images produced, uses and mirror formulae<br \/>\n3. \u00a0Refraction of light, laws of refraction, effects of refraction, refraction through rectangular \u00a0\u00a0\u00a0\u00a0\u00a0prism<br \/>\n4. Refraction through triangular prism, real and apparent depth, total internal reflection, \u00a0\u00a0\u00a0\u00a0\u00a0application of total internal reflection<br \/>\n5.  Refraction through lenses-types of lenses, image formation in lenses, lens formulae<br \/>\n6. Optical instrument-camera, projector, simple and compound microscope, telescope, human \u00a0\u00a0\u00a0\u00a0\u00a0eye, defects and correction of vision<br \/>\n7.  Dispersion of white light- production of pure and impure spectrum, colour of objects<br \/>\n8. Sound wave- production, transmission, speed, echo and its application, reverberation, \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0characteristics of sound, forced vibration, resonance<br \/>\n9.   Musical instruments<br \/>\n10. Vibration in pipes.<\/p>\n<p>\u00a0<strong>REFERENCE TEXTBOOKS<br \/>\n<\/strong><\/p>\n<ul>\n<li>New School Physics by  M.W Anyakhoha\n<\/li>\n<li>New System Physics by Dr. Charles Chow.\n<\/li>\n<li>SSCE WAEC Past Questions\n<\/li>\n<li>UTME Physics Past Questions\n<\/li>\n<\/ul>\n<p>\u00a0<br \/>\n\u00a0<strong>WEEK ONE<br \/>\n<\/strong><\/p>\n<ul>\n<li>\n<div>Reflection of light on plane surface\n<\/div>\n<\/li>\n<li>\n<div>Laws of reflection\n<\/div>\n<\/li>\n<li>\n<div>Image formation by plane mirror\n<\/div>\n<\/li>\n<li>\n<div>Application of reflection on plane mirror\n<\/div>\n<\/li>\n<\/ul>\n<p>\u00a0<strong>REFLECTION OF LIGHT ON PLANE SURFACE<br \/>\n<\/strong>There are two types of reflection:<br \/>\n1.\u00a0\u00a0\u00a0\u00a0Regular Reflection<br \/>\n2.\u00a0\u00a0\u00a0\u00a0Diffuse Reflection or Irregular Reflection<br \/>\n<img decoding=\"async\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1126_Week1SS2Th1.jpg\" alt=\"\"\/><\/p>\n<p>\u00a0In regular reflection, parallel rays of light incident on a smooth or polished surface are reflected as parallel rays in one direction. In diffused or irregular reflection, parallel rays of light incident on a rough or irregular surface are reflected in various directions<br \/>\n<strong>LAWS OF REFLECTION<br \/>\n<\/strong>The first law of reflection states that the incident ray, the reflected ray and the normal at the point of incidence all lie in the same plane<br \/>\nThe second law of reflection states that the angle of incidence (i) is equal to angle of reflection (r).<\/p>\n<p>\u00a0<img decoding=\"async\" align=\"left\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1126_Week1SS2Th2.jpg\" alt=\"\"\/><\/p>\n<p>\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<br \/>\n\u00a0<strong>CHARACTERISTICS OF IMAGE FORMED BY PLANE MIRROR<br \/>\n<\/strong>1.\u00a0\u00a0\u00a0\u00a0It is the same size as the object<br \/>\n2.\u00a0\u00a0\u00a0\u00a0It is virtual<br \/>\n3.\u00a0\u00a0\u00a0\u00a0It is laterally inverted<br \/>\n4.\u00a0\u00a0\u00a0\u00a0It is upright<br \/>\n5.\u00a0\u00a0\u00a0\u00a0It is far behind the mirror as the object is in front of the mirror<\/p>\n<p>\u00a0<strong>IMAGE<br \/>\n<\/strong>There are two types of image:<br \/>\n1.\u00a0\u00a0\u00a0\u00a0Real image<br \/>\n2.\u00a0\u00a0\u00a0\u00a0Virtual image<\/p>\n<p>\u00a0A real image is one that can be caught on a screen.  Light rays actually pass through real image.  A virtual image is one that cannot be caught on a screen.  It is one through which rays do not actually pass but which is nevertheless visible to the eye.<\/p>\n<p>\u00a0<strong>LATERAL INVERSION<br \/>\n<\/strong>The effect on plane mirror on objects placed in front of it whereby the appearance of the image looks like a reversal of the object is known as lateral inversion<\/p>\n<p>\u00a0<br \/>\n\u00a0<img decoding=\"async\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1126_Week1SS2Th3.png\" alt=\"\"\/><\/p>\n<p>\u00a0<strong>IMAGES FORMED BY INCLINED MIRROR<br \/>\n<\/strong>When two mirrors are placed at an angle to each other, the number of images formed is given by:<br \/>\n\u00a0\u00a0\u00a0\u00a0N = 360  &#8211; 1<br \/>\n\u00a0\u00a0\u00a0\u00a0         \u04e8<br \/>\n\t\t\t\u00a0\u00a0\u00a0\u00a0N = Number of images<br \/>\n\u04e8 = Angle of inclination<br \/>\nWhen \u04e8 = 180<sup>0<\/sup>, the two mirrors will act as a single mirror and therefore formed only one image.  When \u04e8 = O, the two mirrors are parallel to each other and the image of object placed between them will be at infinity.<\/p>\n<p>\u00a0<strong>EFFECT OF MIRROR ROTATION ON REFLECTED RAY-MIRROR GALVANOMETER<br \/>\n<\/strong>If the direction of an incident ray on a mirror is kept constant and the mirror is rotated through twice that angle.  This fact is utilized in mirror galvanometer (to measure very small electric current) and in the navigators sextant.<\/p>\n<p>\u00a0<strong>EXAMPLE<br \/>\n<\/strong>The reflection of a narrow beam of light incident normally on a plane mirror falls on a metre rule parallel to the mirror and at a distance of 1m.  Calculate the angle of rotation of the mirror if the reflected beam is displaced 21.26cm along the metre-rule when the mirror rotated.<br \/>\nAngle ONP = 2 \u04e8<br \/>\n\t\t\tTan 2 \u04e8 = 21.26<br \/>\n\t\t\t\u00a0\u00a0\u00a0\u00a0     100<br \/>\n\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0= 0.2126<br \/>\n\u00a0\u00a0\u00a0\u00a02 \u04e8 = tan<sup>-1<\/sup> (0.2126)<br \/>\n\u00a0\u00a0\u00a0\u00a02 \u04e8 = 12<sup>0<\/sup><br \/>\n\t\t\u00a0\u00a0\u00a0\u00a0   \u04e8 = 6<sup>0<\/sup><br \/>\n\t\t\t<strong>EVALUATION<br \/>\n<\/strong>1. If the angle of reflection of a propagated ray is 35<sup>\u043e<\/sup>, calculate (a) The angle of deviation (b)  The angle of glance (c) Angle of incidence.<br \/>\n2. An object is placed between two mirrors inclined at an angle 40 to each other. Find the number of images that will be formed. <\/p>\n<p>\u00a0<strong>USES OF PLANE MIRROR<br \/>\n<\/strong>1. It is used in periscope<br \/>\n2. It is used in kaleidoscope<br \/>\n3. It is used in sextant<br \/>\n<strong>PERISCOPE<br \/>\n<\/strong><br \/>\n\u00a0<img decoding=\"async\" src=\"https:\/\/ecolebooks.com\/nigeria\/wp-content\/uploads\/9jalessonsimages\/100523_1126_Week1SS2Th4.png\" alt=\"\"\/><strong><br \/>\n\t\t\t<\/strong><strong>\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0<br \/>\n<\/strong><strong>General Revision<br \/>\n<\/strong><\/p>\n<ol>\n<li>\n<div>An object is released from rest at a height of 25m. Calculate the time it take to fall to the ground? [g=10m\/s<sup>2<\/sup>]\u00a0\u00a0\u00a0\u00a0<strong><br \/>\n\t\t\t\t\t<\/strong><\/div>\n<\/li>\n<\/ol>\n<p>2   A body is projected horizontally from the top of a tower with a velocity of 20m\/s. It land on a \u00a0\u00a0\u00a0\u00a0level ground at a horizontal distance of 60m from the foot of the tower. Calculate the height of \u00a0\u00a0\u00a0\u00a0the tower.  [g= 10m\/s<sup>2<\/sup>]<\/p>\n<p>\u00a0<strong>WEEKEND ASSIGNMENT<br \/>\n<\/strong><strong>1\u00a0\u00a0<\/strong> Plane mirrors are used in all these except<\/p>\n<ol>\n<li>\n<div>periscope (b) sextant (c) kaleidoscope (c) binoculars\n<\/div>\n<\/li>\n<\/ol>\n<p>2 \u00a0Two plane mirrors are placed touching and at 60<sup>0<\/sup> to each other. If an object is placed \u00a0\u00a0\u00a0\u00a0\u00a0between the mirrors and viewed from above the mirrors. How many images will the eye \u00a0\u00a0\u00a0\u00a0\u00a0see?<br \/>\n\u00a0\u00a0\u00a0\u00a0(a) 5 images   (b) 6 images (c) 4 images (d) 3 images<br \/>\n3 \u00a0\u00a0\u00a0When a ray of light is reflected from a plane surface, the angle of incidence is always equal \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0to the angle of  ( a) reflection (b) refraction ( c ) diffraction (d) dispersion<br \/>\n4 \u00a0\u00a0Which of the following statements is untrue?<br \/>\n\u00a0\u00a0\u00a0When an image is formed in a plane mirror, the image formed will be<br \/>\n\u00a0\u00a0 (a) the same size as the object(b) smaller than the object  (c) laterally inverted (d) always \u00a0\u00a0\u00a0\u00a0virtual<br \/>\n5 \u00a0\u00a0In which of the following instrument is the image that is formed erect<\/p>\n<ol>\n<li>\n<div>pin hole camera ( b) simple camera (c) microscope (d) periscope\n<\/div>\n<p>\u00a0<\/li>\n<\/ol>\n<p><strong>THEORY<br \/>\n<\/strong>1 What do you understand by the term lateral inversion?<br \/>\n2 Two plane mirrors inclining at an unknown angle, forms 11 images. Find the value of the angle?<\/p>\n<p>\u00a0<strong>READING ASSIGNMENT<br \/>\n<\/strong>New school physics for senior sec schools pages 278-285<\/p>\n","protected":false},"excerpt":{"rendered":"<p>THIRD TERM E-LEARNING NOTE \u00a0SUBJECT: PHYSICS\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 CLASS: SS2 \u00a0SCHEME OF WORK \u00a0WEEK \u00a0\u00a0\u00a0\u00a0TOPICS 1. Reflection&#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1,279],"tags":[],"class_list":["post-3545","post","type-post","status-publish","format-standard","hentry","category-posts","category-third-term-ss2-physics"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/3545","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/comments?post=3545"}],"version-history":[{"count":1,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/3545\/revisions"}],"predecessor-version":[{"id":3546,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/posts\/3545\/revisions\/3546"}],"wp:attachment":[{"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/media?parent=3545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/categories?post=3545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ecolebooks.com\/nigeria\/wp-json\/wp\/v2\/tags?post=3545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}