What is the angular separation between the

first-order images on either side of the central maximum?

Answer in units of degrees.

To find the angular separation between the first-order images on either side of the central maximum, you can use the following formula:

θ = λ / d

Where:
θ is the angular separation,
λ is the wavelength of light, and
d is the distance between the sources of the diffraction pattern.

To obtain the value of λ, you need to know the colors of the light sources involved. Different colors have different wavelengths. For example, red light has a wavelength of approximately 700nm, green light has a wavelength of around 550nm, and blue light has a wavelength of about 450nm.

Once you have the value of λ, you need to determine the value of d. This distance depends on the setup of the experiment. It can be the distance between two separate light sources, the distance between slits in a diffraction grating, or the spacing between the grooves of a CD or DVD.

After obtaining the values of λ and d, you can substitute them into the formula to calculate the angular separation in degrees.

Keep in mind that this calculation assumes a single-slit or double-slit diffraction setup. If you are referring to a different experiment or setup, please provide more specific information.