Recent content by merc90

Thanks Redbelly98 for the quick reply. Is the answer: wavelength = 6000 A correct? Steps: wavelength = 2*a*X/D Therefore, 2*a*0.2/1000=2*(a-0.9)*0.5/1000 which gives, a=1.5 or 2*a = 3.0 so, wavelength =3.0*0.2/1000 =6000 A

1. Homework Statement : In a loud single mirror exp. a bright fringe of width 0.2 mm is seen at a point on the screen kept at a distance 1.0 m from the source. When the mirror is raised up to increase the angle of incidence at any point of the mirror by a dist. of 0.9 mm, fringe width of the...