1.

for what distance is ray optics os good approximation when the aperture is 4 mm and the wavelength of light is 400 nm ?

Answer»

24 m
40 m
18 m
30 m

Solution :Fresnel.s DISTANCE, `Z=(a^(2))/(lambda)=((4xx10^(-3))^(2))/(400xx10^(-9))=(16xx10^(-6))/(4xx10^(-7))=40m`


Discussion

No Comment Found

Related InterviewSolutions