Will give brainliest and 50 points!
1. the laser light will pass through diffraction gratings, each with a different line spacing. line spacing is the variable.

a. independent
b. dependent
c. constant

2. the pattern of diffraction will vary as a result of the change in line spacing. the diffraction angle is, therefore, the variable.

a. independent
b. dependent
c. constant

3. a “constant” is a parameter that stays the same regardless of the variables. the parameter of the laser that stays constant is the

a. curvature
b. mass
c. wavelength