Coherent light that contains two wavelengths, 660 nm and 470 nm , passes through two narrow slits with a separation of 0.310 mm and an interference pattern is observed on a screen which is a distance 4.30 m from the slits. Required:
What is the distance on the screen between the first order bright fringes for the two wavelengths?

The electric potential v is constant everywhere within a certain region of space. which statement below is true? the choices are: the electric field is also constant (but not zero) within the region. a charged particle placed within the region will experience an electric force. the electric field is zero everywhere within the region. the electric field varies from place to place within the region.