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What happens if concave mirror is used as a rear view mirror |
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Answer» A concave mirror is similar to a convex lens. It converges the light rays falling on its surface. ait has a focal point, the point at which all the light rays, form an infinite distance and parallel to its axis are converged. Of the object is beyond the focal point of the mirror it will form a real image which will be always on the same side as the object. The image distance varies as the position of the object changes. It forms an image behind itself only when an object is placed closer than its focal point. In this case the image is virtual. For a rear view mirror, the object can be anywhere in front of the mirror. Using a concave mirror is not convenient in such case. A convex mirror, on the contrary, always forms an image behind itself, its a virtual image, is vertical and always smaller than the object. If a concave mirror is used as a rearview mirror of a vehicle as a concave mirror produces the completely inverted image of the real image to be produced. When we use a concave mirror the image of the distant object gets inverted so it is not physically possible to use them. |
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