When red light illuminates a grating with 7000 lines per centimeter, its second maximum is at 62.4°. What is the wavelength of this light?
ans: 633nm
Answer:
The wavelength is about 733 meters.
Explanation:
Use the wavelength-frequency relationship:

The wavelength is about 733 meters.
Electrical Energy because the electrons in the battery travel from out one end of the battery through a circuit and back to the other end