A single slit is illuminated by light of wavelengths lambda_(a) and lambda_(b) chosen so that the first diffraction minimum of the lambda_(a) component coincides with the second minimum of the lambda_(b) component. (a) If lambda_(b)= 420 nm, what is lambda_(a)? For what order number m_(b) (if any) does a minimum of the lambda_(b) component coincide with the minimum of the lambda_(a) component in the order number (b) m_(a) = 2 and (c) m_(a) = 3?

A single slit is illuminated by light of wavelengths lambda_(a) and

1.	A single slit is illuminated by light of wavelengths lambda_(a) and lambda_(b) chosen so that the first diffraction minimum of the lambda_(a) component coincides with the second minimum of the lambda_(b) component. (a) If lambda_(b)= 420 nm, what is lambda_(a)? For what order number m_(b) (if any) does a minimum of the lambda_(b) component coincide with the minimum of the lambda_(a) component in the order number (b) m_(a) = 2 and (c) m_(a) = 3?
Answer» SOLUTION :(a) 840 NM, (b) 4, (c) 6

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