Dispersion Of White Light
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Dispersion Of White Light

Dispersion Of White Light

(a)Why did the white light that went through the prism in figure 22.7a disperse?
(b) List the dispersed lights in decreasing order of wavelengths.
(c) Show that the product of the frequency and wavelength of each of the dispersed light are the same.
(d) What color of light will be formed if the various colors are combined again?
(e) Figure 22.7b is a rainbow. The colors that constitute the rainbow also result from the dispersion of light. What replaced the prism in this dispersion.

The strings: S7P2A21 (Identity - Physical Property)

The math:
Pj Problem of Interest is of type identity (physical property). Identity of the consituents of white light.

Dispersion Of White Light

(a) When light enters another medium at an angle from air, it slows and it is refracted (bent). The constituent colors of white light have different wavelengths. So they refract differently. The slight variations in their refractions relative to each other is the reason the colors of white light disperse (separate).

(b) Red light, Orange light, Yellow light, Green light, Blue Light, Indigo light and Violet light.

(c) The equation that relates the frequency of light to its wavelength is as follows:
ν = c/λ
where ν is frequency of light, c is velocity of light and λ is wavelength of light
Since c is a constant, the product of the frequency and wavelength of each of the dispersed light are the same

(d) White light.

(e) Tiny water droplets in the air.


The point . is a mathematical abstraction. It has negligible size and a great sense of position. Consequently, it is front and center in abstract existential reasoning.
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