The magnification produced by the mirror is 1/3, then the type of mirror is___________.
a) concave mirror b) convex mirror
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2
magnification is 1/3.
since it is positive, image produced is virtual.
since it is less than 1, image is diminished.
A virtual diminished image is formed in case of convex mirror only.
So the mirror is convex.
(Note: concave mirror also produces virtual image but it is always enlarged)
since it is positive, image produced is virtual.
since it is less than 1, image is diminished.
A virtual diminished image is formed in case of convex mirror only.
So the mirror is convex.
(Note: concave mirror also produces virtual image but it is always enlarged)
Answered by
3
m = 1/3 < 1 and erect image.
In a concave mirror, magnification is -ve for inverted image. Then the image can be smaller than the object. Magnification is positive but larger than 1, in case of a virtual and erect image. So given mirror is not a concave mirror.
In a convex mirror, the image is always diminished with magnification < 1 and the image is always erect. So m is positive. Hence, the given mirror is the convex mirror.
In a concave mirror, magnification is -ve for inverted image. Then the image can be smaller than the object. Magnification is positive but larger than 1, in case of a virtual and erect image. So given mirror is not a concave mirror.
In a convex mirror, the image is always diminished with magnification < 1 and the image is always erect. So m is positive. Hence, the given mirror is the convex mirror.
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