Refraction Of Light Video Lessons

Concept

# Problem: Which color of light, red or blue, travels faster in crown glass?a) blue, only if the glass is thinb) bluec) red d) depends on the index of refractione) their speeds are the same

###### FREE Expert Solution

Velocity:

$\overline{){\mathbf{v}}{\mathbf{=}}{\mathbf{f}}{\mathbf{\lambda }}}$

Wavelength in a medium:

$\overline{){\mathbf{\lambda }}{\mathbf{=}}\frac{{\mathbf{\lambda }}_{\mathbf{0}}}{\mathbf{\eta }}}$

Frequency is not affected by a change of medium because it is constant for a given color of light.

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###### Problem Details

Which color of light, red or blue, travels faster in crown glass?

a) blue, only if the glass is thin

b) blue

c) red

d) depends on the index of refraction

e) their speeds are the same