In Young's experiment, the wavelength of monochromatic light used is 6000 A∘. The optical path difference between the rays from the two coherent sources at point P on the screen is 0.0075 mm and at a point Q on the screen is 0.0075 mm and at a point Q on the screen is 0.0015 mm. How many bright and dark bands are observed between the two points P and Q?

In Young's experiment, the wavelength of monochromatic light used is 6

1.	In Young's experiment, the wavelength of monochromatic light used is 6000 A∘. The optical path difference between the rays from the two coherent sources at point P on the screen is 0.0075 mm and at a point Q on the screen is 0.0075 mm and at a point Q on the screen is 0.0015 mm. How many bright and dark bands are observed between the two points P and Q?
Answer» In Young's experiment, the wavelength of monochromatic light used is $6000 A^{\circ}$ . The optical path difference between the rays from the two coherent sources at point P on the screen is 0.0075 mm and at a point Q on the screen is 0.0075 mm and at a point Q on the screen is 0.0015 mm. How many bright and dark bands are observed between the two points P and Q?

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