Find the maximum distance stars could be from the earth

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Q. Two stars are 4.10 x10^11 m apart. A telescope has an objective lens with a diameter of 1.15 m . wavelength 550 nm is being observed. Find the maximum distance that these stars could be from the earth.

Q. A scientific supply catalog advertises a material having an index of refraction of 0.85. Is that a good produckt to buy? Why or why not?

Reference no: EM1346581

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