Answer :
Answer: 2.126 × 10⁻¹ m
Explanation:
wavelength = speed of light ÷ frequency
wavelength = (2.998 × 10⁸ m/s) ÷ (1.41 x 10⁹ /s)
= 2.126 × 10⁻¹ m
wavelength = speed of light ÷ frequency
wavelength = (2.998 × 10⁸ m/s) ÷ (1.41 x 10⁹ /s)
= 2.126 × 10⁻¹ m