The frequency of an electromagnetic wave in a glass block of refractive index is

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

The frequency of an electromagnetic wave in a glass block of refractive index n=1.5n = 1.5 is 6×1014 Hz6\times10^{14}\,\text{Hz}. Calculate its wavelength inside the glass. (a) 5.0×10−7 m5.0\times10^{-7}\,\text{m} (b) 7.5×10−7 m7.5\times10^{-7}\,\text{m} (c) 3.3×10−7 m3.3\times10^{-7}\,\text{m} (d) 2.2×10−7 m2.2\times10^{-7}\,\text{m}

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