1) What is constructive interference? What is destructive interference?
2) In a Young's Double -Slit Experiment, the slit separation is doubled. This results in:
A. an increase in fringe intensity
B. a decrease in fringe intensity
C. a halving of the wavelength
D. a halving of the fringe spacing
E. a doubling of the fringe spacing
3) In a Young's double -slit experiment, bluish green light of wavelength 500 nm illuminates two slits that are separated by 1 mm. The separation between adjacent bright fringes on a screen 5 m from the slits is:
A. 0.10 cm
B. 0.25 cm
C. 0.50 cm
D. 1.00 cm
E. none of the above