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1 markTwo stars, X and Y, behave as black body radiators. The graphs show how the intensity I of radiation emitted varies with wavelength λ for the two stars.
The stars are both viewed from the same distance.
Which of the following statements can be deduced from the two graphs?
Star X is brighter and has a higher surface temperature than star Y.
Star X is brighter and has a lower surface temperature than star Y.
Star X is dimmer and has a higher surface temperature than star Y.
Star X is dimmer and has a lower surface temperature than star Y.
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