Light from a laser falls on a pair of very narrow slits separated by 0.5 micrometer, and bright fringes separated by 1.0 millimeter are observed on a distant screen. If the frequency of the laser light is doubled, what will be the separation of bright fringes?
A. 0.25 mm
B. 0.5 mm
C. 1.0 mm
D. 2.0 mm
E. 2.5 mm
(GR0177 #70)
Solution:Double-slit interference:
with
Answer: B
No comments :
Post a Comment