Estimate the distance (in cm) between the central bright region and the third dark fringe on a screen 5.00 m from two double slits 0.500 mm

Question

Estimate the distance (in cm) between the central bright region and the third dark fringe on a screen 5.00 m from two double slits 0.500 mm apart illuminated by 500-nm light.

in progress 0
Yến Oanh 3 years 2021-08-05T18:49:35+00:00 1 Answers 195 views 0

Answers ( )

  1. vankhanh
    1
    2021-08-05T18:50:44+00:00
    Reply

    Answer:

    1.25cm

    Explanation:

    Using

    Minimum, as dsinစ = (m+1/2) lambda

    Third dark fringe m= 2

    dsinစ = (2+1/2)lambda

    d(y/L)= (5/2) lambda

    Y= 5/2* lambda *L/d

    So substituting

    =[ (500E-9m)(5m)/0.5E-3] 5/2

    =0.0125m

    = 1.25cm

    Explanation:

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )