the wavelength of electromagnetic radiation having a frequency of 1.37 × 10¹⁵ is 2.18 × 10⁻⁷
calculation
wavelength = speed of light/ frequency
speed of light = 3.0 × 10⁸ m/sec
frequency= 1.37 × 10¹⁵ hz = 1.37× 10¹⁵ 1/sec
wavelength = (3.0 × 10⁸ m/sec) / (1.37 × 10¹⁵ 1/sec)
= 2.18 × 10 ⁻⁷ m