## Question

###### Two stars located 23 light-years from Earth are barely resolved using a reflecting telescope having a mirror of diameter 68 $\mathrm{cm} .$ Assuming $\lambda=575 \mathrm{nm}$ and assuming that the resolution is limited only by diffraction, find the separation between the stars.

Two stars located 23 light-years from Earth are barely resolved using a reflecting telescope having a mirror of diameter 68 $\mathrm{cm} .$ Assuming $\lambda=575 \mathrm{nm}$ and assuming that the resolution is limited only by diffraction, find the separation between the stars.

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