We say that concave mirrors when form inverted image then that image is real but when we see in front of spoon from inward side from some distance then it will form inverted image but we don't place any screen in front of spoon. We will observe tht image will form on surface of spoon but real image is not formed on mirror. Why that is so?Is the image formed virtual?But concave mirror forms vitual image but erect.
Asked by prajjawal banati | 1st Sep, 2014, 07:42: PM
Concave mirrors form real and inverted image when the object is placed at focus or beyond it.
When we place the spoon in front of our eye, the distance of our face from the surface of spoon is more than focal length of the spoon.
Hence, the concave mirror should form real and inverted image of our face.
Now, according to you there is no screen in front of our spoon. This is incorrect as the retina of our eye acts as a screen.
Hence, the image of our face is formed on the screen which makes it a real image and not a virtual image.
Answered by Romal Bhansali | 2nd Sep, 2014, 10:16: AM
- distinguish between real image and virtual image
- write the rules for the formation of image by spherical mirrors
- An object is placed at a distance of 15 vm infront of a concave mirror whose focal length is 10 cm at what distance the image is formed? what are the properties of image?
- A spherical mirror produces an image of magnification -1.0 on a screen placed at a distance of 30 cm from the pole of the mirror. a) Write the type of mirror used. b) What is the focal length of this mirror? c) Calculate the object distance. d) What is the nature of the image formed? e) Draw the ray diagram to show the image formation.
- where should be the object placed in front of a concave mirror so as the magnification obtained is -2?
- about image formed by convex mirror
- An object of size 7.0 cm is placed at 27 cm infront of a concave mirror of focal length 18 cm. At what distance from a mirror should a screen be placed, so that a sharp focused image can be obtained?Find the size and the nature of the image.
- why at least two reflected rays are needed to form an image in a concave mirror?
- draw the path of incident ray in a convex mirror when incident ray is directed towards centre of curvature
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