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OpenStudy (anonymous):
In a Young's double-slit experiment, the slits are 0.6mm apart and are illuminated by laser light of wavelength 605.3nm. The screen is 1.7m away. What is the number of dark fringes per centimetre?
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OpenStudy (shamim):
Formula is x=lamda*D/(2a)
OpenStudy (shamim):
x=weidth of a dark fringe Lamda=605.3nm=605.3*10^-9m a=0.6mm D=1.7m
OpenStudy (sohailiftikhar):
here the question is that what is the number of dark fringes not weidth of dark fringe bro ..
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