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Light wavelength 6000 Å is incident norm...

Light wavelength 6000 Å is incident normally on a slit of width `24xx10^(-5)` cm. find out the angular position of seconds minimum from central maximum?

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`asintheta=2lamda` given `lamda=6xx10^(-7)m,a=24xx10^(-5)xx10^(-2)`m
`sintheta=(2lamda)/(a)=(2xx6xx10^(-7))/(24xx10^(-7))=(1)/(2)" "thereforetheta=30^(@)`
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