Why is focal length of concave mirror negative while convex mirror positive explain with diagram
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In the concave lens the focus is present in left of the spherical mirror while in the convex lens focus is present in right side of spherical mirror.
According to sign convention rule the left side of mirror is consider as negative and right side is consider as positive.
According to sign convention rule the left side of mirror is consider as negative and right side is consider as positive.
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Answer:
f, the focal length, is positive for a concave mirror, and negative for a convex mirror.
When the image distance is positive, the image is on the same side of the mirror as the object, and it is real and inverted. When the image distance is negative, the image is behind the mirror, so the image is virtual and upright.
hope this helps you
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