At the second maxima on either side of the central bright spot in a double-slit experiment, light from
1. one opening travels twice as far as light from the other opening.
2. one opening travels one wavelength of light farther than light from the other opening.
3. one opening travels two wavelengths of light farther than light from the other opening.
4. each opening travels the same distance.
5. one opening travels four wavelength of light farther than light from the other opening.

Option 3 is the correct option to the following question.

Explanation:

Double slit experiment:

The double-slit experiment in modern physics reveals that light and matter can exhibit characteristics of both classically described waves and particles; it also shows the inherently probabilistic existence of quantum mechanical phenomena.  

When two wavelength meets ,if the resultant amplitude is maximum then this is known as constructive interference and the resultant amplitude is maximum then this is known as destructive interference.

Therefore the answer is "3".

The author clearly describes what a light second is by including examples that her readers can relate to. She provides an example of how far a kid could run in a second and then shows just how much farther light can travel in the same time by describing the distance as "from Earth to the Moon."

Explanation:

does anyone know or what?