Three monochromatic electromagnetic waves in vacuum have frequencies

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics

Problem

4\times10^{14}\,\text{Hz}

6\times10^{14}\,\text{Hz}

and

8\times10^{14}\,\text{Hz}

. Arrange them in increasing order of wavelength.