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← ScienceIn an LCD display using polarizers, which mechanism causes the modulation of light?
A)Molecular alignment rotation of liquid crystals✓
B)Photoelectric emission from pixel electrodes
C)Quantum tunneling through crystal layers
D)Resonant absorption by color filters
💡 Explanation
The modulation of light transmission in an LCD occurs via molecular alignment rotation of liquid crystals. This is because the polarization of light changes as it passes through the liquid crystal layer, therefore altering transmission, rather than emission, tunneling, or absorption being the main modulator.
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