. In Yong's experiment the wavelength of monochromatic light used is 7000 A. The optical path difference between the rays from the two coherent sources at a point P on one side from the central bright band is 0.0060 mm and at a point Q on the other side is 0.0014 mm. How many bright bands are observed between the points P and O?

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. In Yong's experiment the wavelength
of monochromatic light used is 7000 A. The
optical path difference between the rays from
the two coherent sources at a point P on one
side from the central bright band is 0.0060 mm
and at a point Q on the other side is 0.0014
mm. How many bright bands are observed
between the points P and Q?
Transcribed Image Text:. In Yong's experiment the wavelength of monochromatic light used is 7000 A. The optical path difference between the rays from the two coherent sources at a point P on one side from the central bright band is 0.0060 mm and at a point Q on the other side is 0.0014 mm. How many bright bands are observed between the points P and Q?
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