At what angle should the axes of two polaroids be placed so


Two stars 15 light-years away are barely resolved by a 67 -cm (mirror diameter) telescope.

Part A:

How far apart are the stars? Assume λ=550nm and that the resolution is limited by diffraction.

At what angle should the axes of two Polaroids be placed so as to reduce the intensity of the incident unpolarized light to 1/5

Part B:

At what angle should the axes of two Polaroids be placed so as to reduce the intensity of the incident unpolarized light to 1/15?

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Physics: At what angle should the axes of two polaroids be placed so
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