A 5.3-cm-thick layer of oil (n=1.46) is sandwiched between a 1.1-cm-thick sheet of glass and a...

A 5.3-cm-thick layer of oil (n=1.46) is sandwiched between a 1.1-cm-thick sheet of glass and a 2.0-cm-thick sheet of polystyrene plastic (n=1.59). How long (in ns) does it take light incident perpendicular to the glass to pass through this 8.4-cm-thick sandwich?

A 2.0-cm-wide diffraction grating has 1000 slits. It is illuminated by light of wavelength 570 nm . What are the angles of the first two diffraction orders?

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genius_generous answered 1 year ago

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