# questions on mirror formula

A concave mirror produces three times magnified (enlarged) real image an object placed at 10 cm in front of it. Given A convex mirror of focal length f forms an image which is 1/n times the object. Solved example: Mirror formula. The sign conventions for the given quantities in the mirror equation and magnification equations are as follows: f is + if the mirror is a concave mirror; f is - if the mirror is a convex mirror; d i is + if the image is a real image and located on the object's side of the mirror. Physics Grade XI Reference Note: Mirror formula for concave mirror when real image is formed and for convex mirror. Practice: Using the magnification formula for mirrors. m = (−12)/3 Physics Grade XI Reference Note: Mirror formula for concave mirror when real image is formed and for convex mirror. Refractive Index. Questions pertaining to spherical mirrors If you're seeing this message, it means we're having trouble loading external resources on our website. Object Distance = u = –3 m = ℎ′/ℎ and, f = Focal length of the mirror. b. At what distance from the mirror should a screen be placed, so that a sharp focussed image can be obtained? If magnification (m) is Ans.A (Hint Spherical mirrors are of two types – Concave and Convex.) Where is the image located?   Find the position of the image, its nature and size. This is the currently selected item. 1/di = 1/f – 1/do = 1/10 – 1/30 = 3/30 – 1/30 = 2/30. In the image, the red text is negative, and blue text is positive, It is Ratio of Height of Image to the Height of Object, Magnification = Height of Image/ Height of Object, There is another formula of magnification, Note : - Image Distance = v It may be written as, where, v = Distance of image from pole of mirror. The distance of the object from the mirror is (n-1)f (n-1/n) f (n+1/n) f (n+1) f; Answer: (a) (n-1)f. Q2: Consider a concave … What should be the range of distance of the object from the mirror? It means image formed 4. c. 5. d.3. di = 30/2 = 15 cm. Assumptions and Sign conventions NCERT Question 15 - B. Find the size and the nature of the image. This is the currently selected item. It is because Focus is in front of mirror, Focal Length of Convex Mirror is Positive. Question 1 An object is placed at a distance of 10cm from a convex mirror of focal length 15cm.Find the position and nature of the image? And is written as : 1 v + 1 u = 1 f. Magnification formula for mirrors. Practice: Nature and size of images from magnification. , It means image formed How is mirror formula applicable in plane mirrors. Questions Example 10.3 - A concave lens has focal length of 15 cm. m = −4 Image Distance = v = –12 The plus sign indicates that the image is real or the image is 15 cm in front of the mirror, on the same side as the object. Image distance which is represented as ‘v’. Now, What is the magnification? Get to the point NEET (NTA)-National Eligibility cum Entrance Test (Medical) Physics questions for your exams. Mirror Formula MCQs. m = (−)/ A convex mirror used for rear-view on an automobile has a radius of curvature of 3.00 m. If a bus is located at 5.00 m from this mirror, find the position, nature and size of the image. What is the nature of the image? The mirror formula is applicable both in spherical mirrors (concave mirrors and convex mirrors) and in … Teachoo is free. The magnification of image ( m) : m = –di / do = -15/30 = -0.5. He provides courses for Maths and Science at Teachoo. Ray Optics-Mirror Formula: Questions 1-5 of 7. Suppose Height of Object is 3 cm. Is the image larger or smaller than the object? The distance between the object and the pole of the mirror is called the object distance (u… Determine the focal length of a convex mirror that produces an image that is 16.0 cm behind the mirror when the object is 28.5 cm from the mirror. … It may be written as, where,   v = Distance of image from pole of mirror u = Distance of object from pole of mirror and,       f = Focal length of the mirror. At what distance from the mirror should a screen be placed in order to obtain a sharp image? c. Focal length which is represented as ‘f’. negative, On signing up you are confirming that you have read and agree to Mirror Formula helps us to find: a. u = Distance of object from pole of mirror.