Question

6) What is the angular separation of the two second-order spectral lines having wavelengths 417 nm and 388 nm using a diffraction grating having 456 lines/mm? A) 3.26° B) 1.52。 6) C) 0.81 5。 D) 1.63 7) A plane flies toward a tationary siren at 1/4 the speed of sound.Then the plane s still on the ground and the siren is driven toward siren at 1/4 the speed of sound. Then the plane st it at 1/4 the speed of sound. Inb cases, a person sitting in the plane will hear the same frequency of sound from A) True B) False 3

Answer 1

(d)ラ111637 given 456 lves en amedr (4566) -3 x16 4-5 -6 怵 02 0~1,63。 -$み