Problem 3
Two in-phase coherent sources emit waves of equal amplitude and wavelength with path difference . State the condition for constructive interference. Assume ideal objects and components, neglect unstated losses, and use SI units. (a) Derive the primary requested quantity from the appropriate law. (b) Analyze quantitatively how the result depends on the given parameters. (c) Check a physically meaningful limiting case and explain its meaning. State sign conventions, show reasoning, and check dimensions. (a) Calculate the requested quantity from the data. (b) Give the law or expression showing parameter dependence. (c) Examine a limit consistent with the model.
problems.proof.stepOf
problems.proof.analysis
Choose a system and convention suited to the setup; the assumptions specify which effects are retained.