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Parallel light rays travel toward a biconcave lens and are all bent away from the principal axis. Which lens is shown in the diagram?
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Select for each of the following statements whether it is correct or incorrect. (a) in an isothermal expansion of an ideal gas. (b) the temperature remains constant. (b) the pressure remains constant. (c) there is work done by the gas. (d) there is heat added to the gas. (e) the change in internal energy equals zero.
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Parallel light rays travel toward a biconcave lens and are all bent away from the principal axis....
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