(A) Propagation of modulated light waves
(B) Propagation of infrared radiation
(C) The visible light as carrier with frequency of the order of 5 × 1014 Hz
(D) High frequency radio waves
(A) Propagation of modulated light waves
(B) Propagation of infrared radiation
(C) The visible light as carrier with frequency of the order of 5 × 1014 Hz
(D) High frequency radio waves
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