Two sources of light wavelength 2500 angstrom and 3500 angstrom are used in young's double slit experiment simultaneously which order of fringes of two wavelength patterns coincide
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Given Two sources of light wavelength 2500 angstrom and 3500 angstrom are used in young's double slit experiment simultaneously which order of fringes of two wavelength patterns coincide
The two fringes coincides when
n1 D λ1 /d = n2 D λ2/d
n1 / n2 = λ2 / λ1
n1 / n2 = 3500 / 2500
n1 / n2 = 35 / 25
n 1/n2 = 7 / 5
= 7:5
fringes of two wavelength patterns coincide in the ratio 7 : 5
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