A light beam shines through a thin slit and illuminates a distant screen. The central bright fringe on the screen is 1.00 cm wide, as measured between the dark fringes that border it on either side
Which of the following actions would decrease the width of the central bright fringe? (There may be more than one correct choice.)
A) increase the wavelength of the light
B) decrease the wavelength of the light
C) increase the width of the slit
D) decrease the width of the slit
E) put the apparatus all under water
Answer: B, C, E
You might also like to view...
What are the two parts of a shadow during an eclipse?
a. total and partial b. apogee and perigee c. sidereal and synodic d. waxing and waning e. umbra and penumbra
Consider a two-slit interference experiment like the one shown in figure Q3.7b. The distance between adjacent bright spots in the interference pattern on the screen (A) increases, (B) decreases, or (C) remains the same if, The intensity of the light increases
A. increases B. decreases C. remains the same
The Big Bang theory can explain
A. the relative abundance of helium in the Universe B. the expansion of the Universe C. the cosmic microwave background radiation D. All of these choices are correct.
________ in the early solar system might explain many of the observed irregularities
Fill in the blank(s) with correct word