What property of visible light explains its role in photosynthesis?
**Infrared waves** λ≈700 nm to 1 mm, f≈10¹² to 4×10¹⁴ Hz, produced by hot bodies and molecular vibrations, wavelength range as per document 700 nm-1 mm, used in remote sensing because IR penetrates haze, thermal imaging detects IR emitted by objects, remote controls, effective for sensing temperature. Visible light has wavelengths that correspond to the energy levels needed to excite chlorophyll molecules in plants, driving the photochemical reactions of photosynthesis. Using c = fλ, E₀/B₀ = c, I_d = ε₀ dΦ_E/dt, and spectrum classification λ = c/f, evaluation yields Suitable energy levels, ill
Ref: NCERT > Physics Book > Electromagnetic Waves > Infrared, Visible Light and Applications
