A-level Physics (Advancing Physics)/Young's Slits/Worked Solutions

1. A 2-slit experiment is set up in which the slits are 0.03 m apart. A bright fringe is observed at an angle 10° from the normal. What sort of electromagnetic radiation was being used? So, microwaves were being used. 2. Light, with a wavelength of 500 nm, is shone through 2 slits, which are 0.05 m apart. What are the angles to the normal of the first three dark fringes? , where n is an odd integer. Then, substitute in n = 1,3 and 5 to gain corresponding values of θ: nθ (°)12.9 x 10−438.6 x 10−451.4 x 10−3 3. Some X-rays, with wavelength 1 nm, are shone through a diffraction grating in which the slits are 50 μm apart. A screen is placed 1.5 m from the grating. How far are the first three light fringes from the point at which the normal intercepts the screen? , where n is an integer. Then, substitute in n = 1,2 and 3 to gain corresponding values of x: nx (m)130 x 10−6260 x 10−6390 x 10−6