the magnification of a convex mirror is always positive why

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November 29th, 2020

Correct. It will also have a negative magnification. The passenger side mirror in every car is slightly convex. (B) If both Statement - I and Statement - II are true but Statement - II is not the correct explanation of Statement – I. The nature of the image that a spherical mirror produces positive magnification is usually enlarged ... by a concave mirror will always be ... of linear magnification of a convex mirror. Statement II: m = -v/u and convex mirror always forms virtual image. Generally the convex mirror has magnification greater than 1 and magnification of concave mirror has less than 1. When you use the mirror equation--or the thin lens equation, the object distance is always positive. In the case of the image distance, a negative value always indicates the existence of a virtual image located behind the mirror. Statement I : Magnification of a convex mirror is always positive .. The focal length is positive for 'real focal points'--meaning light *actually* converges at the focal point, and is negative for 'virtual focal points'--light only *appears* to converge at a focal point. See, this distance f is measured in the direction of incident rays . The paraxial parallel rays are focused on the right hand side of convex lens. It’s radius of curvature is also negative. Hence, focal length of convex lens is positive. Answer: The magnification is 1 Explanation: Magnification is defined as ratio to a image height to object height, which can be mathematically proven to be same as ratio of image distance to object distance.. Magnification of a mirror is used in many cases. Characteristics of Convex Mirrors. According to the Cartesian sign convention, the focal length should be positive since the convex mirror forms a virtual image to the right of mirror (positive direction) when light comes from left. My teacher also said that it would be positive but I have read in many places on the internet that it is negative. A convex mirror is also known as a diverging mirror as this mirror diverges light when they strike on its reflecting surface. But, we can see that focal length of concave mirror is negative. (A) If both Statement- I and Statement- II are true, and Statement - II is the correct explanation of Statement– I. Reason : It depends on the sign convention chosen. This kind of mirror is known as a convex mirror. Assertion : Magnification of a convex mirror is always positive, but that of a concave mirror may be both positive or negative. A convex mirror will always create a virtual image. Virtual, erect, and diminished images are always formed with convex mirrors, irrespective of the distance between the object and the mirror. (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true but R is not correct explanation of A In the case of the image height, a positive value indicates an upright image.

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