A Mixture of 450-Nm and 900-Nm Light Is Incident on a Multiple-Slit

Multiple Choice

A mixture of 450-nm and 900-nm light is incident on a multiple-slit system.Which of the following is true?

A) All lines of the 900-nm light coincide with lines of the 450-nm light
B) All lines of the 450-nm light coincide with lines of the 900-nm light
C) None of the lines of the 900-nm light coincide with lines of the 450-nm light
D) None of the lines of the 450-nm light coincide with lines of the 900-nm light
E) None of the above