An air wedge is formed using two glass plates. that are in contact along their left edge. When viewed by highly monochromatic light, there are exactly 7 dark bands in the reflected light. The air is now evacuated (with the glass plates remaining rigidly fixed) and the number of dark bands decreases to exactly 4. The index of refraction of the air (with unknown composition) is (3 significant digits):

An air wedge is formed using two glass plates. that are in contact along their left edge. When viewed by highly monochromatic light, there are exactly 7 dark bands in the reflected light. The air is now evacuated (with the glass plates remaining rigidly fixed) and the number of dark bands decreases to exactly 4. The index of refraction of the air (with unknown composition) is (3 significant digits):

Similar questions

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