A Young's double-slit apparatus is set up so that a screen is positioned 2.1 m from the double slits, and the spacing between the two slits is 0.033 mm. What is the distance between alternating bright fringes on the screen if the light source has a wavelength of 678 nm? (1 nm = 10?9 m)

a. 3.0E–4 m
b. 4.3E–2 m
c. 2.1E–2 m
d. 4.7E–2 m
e. 1.1E–2 m


b

Physics & Space Science

You might also like to view...

To date, our serious searches for extraterrestrial life have been done almost entirely:

A) in Roswell and Gulf Breeze. B) with radio telescopes. C) with optical telescopes looking for nuclear tests. D) with microwaves in the giant molecular clouds. E) with infrared telescopes looking for greenhouse gases.

Physics & Space Science

Scale the Milky Way down to the size of a compact disc. Which of the following best describes the size, shape, and distance of the Andromeda Galaxy on the same scale?

A) a compact disk a few meters away B) a pecan nut about 1 centimeter away C) a grapefruit about 1 kilometer away D) a grapefruit a few meters away E) a compact disk about the length of a football field away

Physics & Space Science

Joe and Bill throw identical balls vertically upward. Joe throws his ball with an initial speed twice as high as Bill. Assuming there is no air resistance, the maximum height of Joe's ball will be

A) four times that of Bill's ball. B) two times that of Bill's ball. C) equal to that of Bill's ball. D) eight times that of Bill's ball. E) roughly 1.4 times that of Bill's ball.

Physics & Space Science

The substances that are formed by a chemical reaction are called the

a. products. b. reactants. c. chemicals. d. precipitates.

Physics & Space Science