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Class 10 Science Medium Mcq English Medium

For the concave mirror case above (object 7.0 cm at u = -27 cm, f = -18 cm, v = -54 cm), the magnification and resulting image size are

Question
For the concave mirror case above (object 7.0 cm at u = -27 cm, f = -18 cm, v = -54 cm), the magnification and resulting image size are
m = -2, image is 14 cm, real and inverted
m = +2, image is 14 cm, virtual and erect
m = -0.5, image is 3.5 cm, real
m = -1, image is 7 cm, real
Answer
m = -2, image is 14 cm, real and inverted
Detailed Explanation
m = -v/u = -(-54)/(-27) = -2, so the image is inverted, real, and 7.0 x 2 = 14 cm tall.
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