GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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> 1
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< 1
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= 1
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No relation
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Detailed explanation-1: -If magnification is more than 1, the image is magnified and if it is less than one image is diminished. If magnification is positive, the image is erect, virtual and if it is negative, the image is inverted, real.
Detailed explanation-2: -The magnification of-1 is possible in only convex lens. When the object is moved 20 cm towards the lens, so the new object distance will be = 30 cm-20 cm = 10 cm. Since the new object distance is less than focal length of the lens, thus the image will be virtual, erect and magnified.
Detailed explanation-3: -The magnification produced by a plane mirror is +1 means that the image formed is virtual, erect and of the same size as that of object. Video Explanation.
Detailed explanation-4: -When the magnification is less than one, it signifies that the image formed by the lens is smaller then the original size of the object.