Double-Slit Interference: An optical engineer needs to ensure that the bright fringes from a double-slit are 15.7 mm apart on a detector that is 1.70 m from the slits. If the slits are illuminated with coherent light of wavelength 633 nm, how far apart should the slits be?

A. 68.5 ?m
B. 74.0 ?m
C. 79.5 ?m
D. 63.0 ?m


Answer: A

Physics & Space Science

You might also like to view...

If you are standing at the Earth's north pole, which of the following would be located at the zenith?

a. the nadir b. the star Vega c. the celestial equator d. the north celestial pole

Physics & Space Science

Why is the ozone layer in Earth's atmosphere important to life on its surface?

What will be an ideal response?

Physics & Space Science

Banked Curves: Two cars go around a banked curve at the proper speed for the banking angle. One car has tires with excellent traction, while the other car has bald slippery tires. Which of these cars is more likely to slide on the pavement as it goes around the curve?

A. the car with the new tires B. the car with the bald tires C. Neither car will slide. D. It depends on if the pavement is wet or dry.

Physics & Space Science

A radioactive isotope of atomic number Z emits a beta-minus particle, and then the daughter nucleus emits a gamma ray. What is the atomic number of the resulting nucleus after both processes?

A) Z - 3 B) Z + 1 C) Z - 2 D) Z - 1

Physics & Space Science