Question

A grating with 2000 lines per cm is illuminated with a gas discharge tube. The (5)

gas discharge tube contains two hydrogen lines of wavelength 410 nm and 434 nm.

Calculate the spacing between the first order lines on a screen 1 m from the grating.​

Answer 1

Answer:

White light falls on two narrow slits separated by 0.40 mm. The interference pattern is observed on a screen 3.0 m away. (a) What is the separation between the first maxima for red light (λ=700nm)(λ=700nm) and violet light (λ=400nm)?(λ=400nm)? (b) At what point nearest the central maximum will a maximum for yellow light (λ=600nm)(λ=600nm) coincide with a maximum for violet light? Identify the order for each maximum