Answer:
λ = 0.416×10³ nm
Explanation:
Given data:
Frequency of light = 7.21×10¹⁴ Hz
Wavelength of light = ?
Solution:
speed of light = wavelength × frequency
c = speed of wave = 3×10⁸ m/s
by putting values
3×10⁸ m/s = λ× 7.21×10¹⁴ Hz
λ = 3×10⁸ m/s / 7.21×10¹⁴ Hz
λ = 0.416 ×10⁻⁶ m
λ = 0.416×10⁻⁶ ×10⁹ nm
λ = 0.416×10³ nm
