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Two slits are made one millimetre apart and the screen is placed one metre away. What is the fringe separation when blue-green light of wavelength 500 nm is used ? |
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Answer» Solution :Distance between two consecutive bright or two consecutive dark FRINGES is called "fringewidth". Its symbol is B. Its formula is : `beta=(lamdaD)/(d)` `:.beta=((500xx10^(-9))(1))/((1xx10^(-3)))` `:.beta=5xx10^(-4)m` Two SLITS are made 1.33 mm apart and the screen isplaced 1.33m away. What is the FRINGE seperation when blue-green light of wavelength 630 nm is used ? |
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