Question

An electromagnetic wave with frequency $5.70 \times 10 ^ { 14 } \mathrm { Hz }$ propagates with a speed of $2.17 \times 10 ^ { 8 } \mathrm { m } / \mathrm { s }$ in a certain piece of glass. Find (a) the wavelength of the wave in the glass; (b) the wavelength of a wave of the same frequency propagating in air; (c) the index of refraction $n$ of the glass for an electromagnetic wave with this frequency; (d) the dielectric constant for glass at this frequency, assuming that the relative permeability is unity.

          An electromagnetic wave with frequency $5.70 \times 10 ^ { 14 } \mathrm { Hz }$ propagates with a speed of $2.17 \times 10 ^ { 8 } \mathrm { m } / \mathrm { s }$ in a certain piece of glass. Find (a) the wavelength of the wave in the glass; (b) the wavelength of a wave of the same frequency propagating in air; (c) the index of refraction $n$ of the glass for an electromagnetic wave with this frequency; (d) the dielectric constant for glass at this frequency, assuming that the relative permeability is unity.

Added by Alfonso R.

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