1. a. What is the speed of light in \"fine crystal\" (leaded glass), if the glas

Question

1. a. What is the speed of light in "fine crystal" (leaded glass), if the glass has an index of refraction of 1.75?

1. b. Suppose that light from a green laser passes from air into a piece of the leaded glass (n=1.75). If the laser light has a wavelength of 550.0nm in air, find the wavelength of the light in the glass. (Note: as light passes from one medium into another, the light's frequency remains unchanged.)

1. c. The value of n in the leaded glass is found to be 1.73 for wavelengths of red light, 1.75 for green light, and 1.77 for wiolet light. This phenomenon is called...

is it: diffraction, dispersion, reactance, differentiation, interference, refraction?

Explanation / Answer

v = c/n

?'*f = c*?/n

?' = ?/n = (550nm)/1.75 = 314.28 nm

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dispersion

the refractive index depends on the wavelength

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