Final answer:
When a monochromatic hologram is viewed in white light, it will display a spectrum of colors around the edges due to the different diffraction patterns of each wavelength in the white light.
Step-by-step explanation:
If a hologram is recorded using monochromatic light but is viewed in white light, one will typically see an image with rainbow edges due to dispersion. As white light consists of multiple wavelengths, when it illuminates a monochromatic hologram, the diffraction patterns for different colors will occur at slightly different locations because each color (wavelength) is diffracted differently. The resulting image can appear slightly blurry and exhibit a spectrum of colors around the edges, an effect stemming from the interference and diffraction of the various light components.
Therefore, the correct answer to the given question is the option that mentions a spectrum of colors due to interference effects. This is because the white light gives rise to multiple diffraction patterns superimposed on one another, creating a rainbow-like effect around the monochromatic image, as each wavelength diffracts differently on the hologram's surface. This phenomenon is commonly observed in reflection holograms, such as those found on credit cards.