Question: 12 Incorrect 0 / 1 pts Question 12 A lens has a refractive power of -1.5. What is its focal length? O +67 cm O

Incorrect 0 / 1 pts Question 12 A lens has a refractive power of -1.5. What is its focal length? O +67 cm O -150 cm O +150 cm O +8.5 cm O -67 cm That's not correct

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