4: A barrier contains 11 slits separated by 150.m . The slits are illuminated by a monochromatic light source with a wavelength of 580 nm, and the interference pattern is projected on a screen 2.45 m from the barrier. show answer No Attempt 50% Part (a) What is the distance, in centimeters, from the principal maximum to the first-order maximum?Problem 12: This question will ask what speed, expressed as a ratio to the speed of light, corresponds to various values of the relativistic parameter . show answer No Attempt 50% Part (a) At what speed, relative to the speed of light, is = 1.5