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Homework Statement A slab of glass has a refractive index of 1.3. What will be the speed of light in this glass? Homework Equations The Attempt at a Solution \frac{sin i}{sin r}=1.3 ?

Homework Statement The speed of light is 3 x 10^8 m/s. Blue light has a wavelength of about 450nm (nm = 10^-9 m). Calculate the frequency of this light Homework Equations v=f\lambda The Attempt at a Solution 3 x 10^8 = f x 450 f = \frac{3 times 10^8}{450}