Two beams of coherent light start out at the same point in phase and travel different paths to arrive at point P. If the maximum constructive interference is to occur at point P, the two beams must travel paths that differ by
A) an odd number of half-wavelengths.
B) a whole number of half-wavelengths.
C) a whole number of wavelengths.
C
You might also like to view...
Suppose the interior angles of a triangle are ?1, ?2, and ?3, with ?1 > ?2 > ?3 . Which side of the triangle is the shortest?
a. The side opposite ?1 b. The side opposite ?2. c. The side opposite ?3 d. More information is needed unless the triangle is a right triangle.
The Milky Way Galaxy is forming about ten stars per month
Indicate whether the statement is true or false
The applied magnetic field that it is necessary to reduce the intensity of magnetization of a ferromagnetic material to zero after saturation in the forward direction is the _________field.
Fill in the blank(s) with the appropriate word(s).
Earth's axis is tilted 23.5 degrees from a perpendicular to the plane of the ecliptic
Indicate whether the statement is true or false.