Answer:
λ = 6.98 × 10^-7 m
Explanation:
Using the formula; λ = v/f
Where;
λ = wavelength (m)
v = speed of light (3 × 10^8m/s)
f = frequency (Hz)
Based on the provided information in this question, the frequency (f) of red light is 4.3×10^14hz while v = 3×10^8m/s.
λ = v/f
λ = 3×10^8 ÷ 4.3×10^14
λ = 0.698 × 10^(8-14)
λ = 0.698 × 10^-6
λ = 6.98 × 10^-7 m
