Answer this,,,

A beam of white light (300 nm 700 nm) is projected through a diffraction grating (500 slits/mm) on a white screen 1.7 m from the grating.

(a) What is the angular position of the first minimum of the 700-nm component?

(b) Which wavelength components of the light have a maximum at this position?

A random signal Y (t) has the power spectrum 831(k))=26(w)+3[6(w+3)+6(w3)]+ l w2+5+ (a) Find the autocorrelation of Y (t) (b) Is Y (1%) white noise? If not, does it contain a white noise component? (c) Does Y (t) contain a dc component? If yes, what are the power and the amplitude of the dc component? (d) Does Y (13) contain periodic components? If yes, what are the powers, amplitudes, and frequencies (in Hz) of these periodic components? (e) Does Y (t) contain components that are non-dc, non-periodic and non-white simultaneously? If yes, what is the total power of these components