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OPM5 and OPM4 Optical Power Meters |

MEREK : power 4d

OPM5 and OPM4 Optical Power Meters |

power 4d3d toallai powerc4dc4d! stable diffusionTranscript. Question 39 If the power of a lens is − 4.0 D, then it means that the lens is a (A) concave lens of focal length −50 m (B) convex lens of focal length +50 cm

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