# 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

🤓 Based on our data, we think this question is relevant for Professor Gainer's class at UCSB.

###### 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.

###### 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