Physics
Physics, 24.10.2021 14:00, jgstyle2388

A student determines the focal length of a device โ€˜xโ€™ by focusing the image of a distant object on a screen placed 20cm from the device on the same side as the object. The device โ€˜Xโ€™ is

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A student determines the focal length of a device โ€˜xโ€™ by focusing the image of a distant object on a...

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