Question: A real object is 2 cm tall. The object is placed on the left side of a converging lens with a focal length of 8

A real object is 2 cm tall. The object is placed on the left side of a converging lens with a focal length of 8 cm. The object forms an upright image by the lens. If the image is 20 cm away from the lens, what is the height of the image? Express the answer as a positive quantity. O 15 cm 12 cm O 9 cm O 7 cm O 20 cm 33 cmRu-106 can be used to treat melanoma in the eye. This isotope decays by B emission with a half-life of 373 days. Suppose a fresh sample contains 6x10 nuclei of Ru-106. What is the decay rate of the sample after 700 days. 86 Bq 240 Bq O 4 Bq 180 Bq 449 Bq 35 B

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