An objetct is placed 30cm in front of a diverging lens with a focal length of ma

Question

An objetct is placed 30cm in front of a diverging lens with a focal length of magnitude f=20.0cm. Which of the following is true about the image? A. The image is real, erect, and 12 cm away from the lens on the same side as the object B. The image is real, erect, and 12 cm away from the lens on the opposite ide as the object C. The image is virtual, erect, and 12cm away form the lens on the same side as the object. D. The image is virtual, erect, and 12cm away from the lens on the opposite side as the object. E. None of the above.

PLEASE EXPLAIN HOW YOU GOT THE ANSWER. THANK YOU

Explanation / Answer

1/f = 1/v - 1/u

-1/20 = 1/v +1/30

1/v = -1/20 - 1/30

v = -12 cm

The image is virtual, erect, and 12cm away form the lens on the same side as the object

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