ONE MARK QUESTIONS 1. ii. Differences Between Convex Mirror and Concave Mirror. February 19, 2019 by SuccessCDs Team in CBSE Class 8 Science Lessons Explanation, Notes, NCERT Question Answers. Hence, convex mirrors are used as rear-view mirrors in vehicles. The ratio of the height of the image in a spherical mirror, to the height of the object is called magnification (m) The field of view for a convex mirror is greater than that for a plane mirror, the aperture being the same. Selina solutions for Concise Physics Class 8 ICSE chapter 6 (Heat Transfer) include all questions with solution and detail explanation. There are two types of spherical mirrors: concave and convex mirror.In this article, we will be studying the spherical mirrors structure and its different types in detail. This is why, the rear view mirrors of the cars and bikes are made of convex mirrors. ENT doctors use them for examining the internal parts of the ear, nose and throat. Our mission is to provide a free, world-class education to anyone, anywhere. Email This BlogThis! Sign convention for Spherical Mirrors. A concave mirror can be used as a shaving mirror, and by dentists to view clearly the inner parts of the mouth. Rule 1: A light ray incident parallel to the principal axis, after reflection, either actually passes through the principal focus or appears to pass through the principal focus. Object at F The field of view for a convex mirror is greater than that for a plane mirror, the aperture being the same. A real, inverted, highly diminished image is formed at the focal point F, in front of the concave mirror. This point is called the principal focus. The field of view for a convex mirror is greater than that for a plane mirror, the aperture being the same. The field of view for a convex mirror is greater than that for a plane mirror, the aperture being the same. an object is placed close to a concave mirror such that the distance between the mirror and the object is less than its focal length, then a magnified and virtual image is formed. If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked. Hence, we have the caution “Objects seen in the mirror are closer than they appear” printed on the outside rear view mirrors of vehicles. The image formed by a convex mirror is always erect, virtual, and diminished in size. Unlike in a convex mirror, the nature and size of the image in a concave mirror depends on the distance of the object from the mirror. Concave Mirror This is why, the rear view mirrors of the cars and bikes are made of convex mirrors. Write down four important characteristics of image formed by a plane mirror. Due to this they always form diminished, virtual and erect images irrespective of the position of the object in front of them. Newer Post … 1 Mirrors having a curved reflecting surface are called as: a.plane mirror b. spherical mirrors. We love to hear your thoughts about this post! An imaginary line passing through the centre of curvature and the pole of the mirror is called its principal axis. The distance from any point on the convex mirror to its centre of curvature is called the radius of curvature. The images formed by the mirrors are of two types they are Thus, as the object approaches the mirror, the image approaches the mirror too but not proportionately. Object at infinity The Multiple Choice Questions Related i.e. Activities. Uses of Convex Mirrors, Object is always considered at the left of mirror. Object beyond C The geometric centre of a convex mirror is called its pole. Ans : [CBSE 2014] Spherical mirror is a part of a sphere. Spherical mirrors can be further classified into the following two types as. Labels: class10-physics, class10-science, class12-Physics, class8-science. The first mirrors used by humans were most likely pools of water. We can observe ourselves magnified when the mirror is placed close to our face. i. Concave mirrors This will clear students doubts about any question and improve application skills while preparing for board exams. The centre of the sphere from which concave mirror was cut is called the centre of curvature of the concave mirror, The distance from any point on the concave mirror to its centre of curvature is called the radius of curvature of the, An imaginary line passing through the centre of curvature and the pole of the concave mirror is called principal axis of the, The area of a concave mirror that is exposed to incident. Answer: Light is defined as a form of energy that stimulates sight and makes things visible. to view a magnified view of the interior parts of the mouth are concave. Convex mirrors diverge the light incident on them and hence they are called the diverging mirrors. A plane mirror which is a highly polished surface reflects the light on it.This is the regular reflection.However,irregular surfaces also do the same and it is called irregular reflection.I am not able to understand that if both are reflecting surafces why does a plane mirror form an image but a rough surface doesa not. Class 8 > CBSE Class 8 Science Lessons Explanation, Notes, NCERT Question Answers > Light Class 8 Notes, Question Answers, Explanation Light Class 8 Notes, Question Answers, Explanation . Karnataka Class-8 keyboard_arrow_right; Physics keyboard_arrow_right; Our Colourful World keyboard_arrow_right; Spherical Mirrors . The reflected rays, when projected backwards, appear to meet at a point on the principal axis. Hence, convex mirrors are used as rear-view mirrors in vehicles. It is also installed behind automated teller machines as a security measure. If an object is placed close to a concave mirror such that the distance between the mirror and the object is less than its focal length, then a magnified and virtual image is formed.