Post a New Question

Physics

posted by .

In an experiment conducted using the Young's double-slit apparatus, the separation between the slits is 20 µm. A first-order constructive interference fringe appears at an angle of 2.5o from the zeroth order (central) fringe.

A. What wavelength of light is used in the experiment?
B. At what angle would the fourth-order (m = 4) bright fringe appear?
C. At what angle would the fourth-order (m=4) dark fringe appear?

  • Physics -

    y(max1) =mλL/d
    λ=y(max1)•d/m•L
    tanα=y(max1)/L
    λ=tanα•d/m=tan2.5°•20•10⁻⁶/1=0.873•10⁻⁶ m
    tanα=L •m/d=….

  • Physics -

    Beeef

Answer This Question

First Name
School Subject
Your Answer

Related Questions

More Related Questions

Post a New Question