Question

Which one is not possible for the magnification by a concave mirror.
A) M<1 B) M<-1
C) M>-1
D) M=-1​

Answer 1

Greetings !!!

Answer:

C

Answer 2

Answer:

The correct answer is C. The magnification which is not possible for the concave mirror is M>-1.

Explanation:

• The magnification in a concave mirror is determined by the height of the image to the height of the item.
• The negative of ratio between the image's distance from the mirror and the object's distance from the mirror is also equal to the magnification.
• The distances from the mirror to the item are regarded as negative distances according to the Cartesian sign convention, whereas the lengths from the mirror to the other side are seen as positive distances.
• Positive distances are those above the principal axis, and negative distances are those below the principal axis.
• Therefore, the magnification is negative for actual images and positive for virtual images if the image is real. Thus, Magnification can be greater than 1, equal to -1, or less than 1.

Thus, the magnification which is not possible for the concave mirror is M>-1.

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