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Question 14 Marks
Write one-one use of the following waves: (i) Micro waves (ii) Infrared waves (iii) Ultraviolet waves (iv) Radio waves
Answer
(i) Micro waves : As carrier waves in television or radio transmission
(ii) Infrared waves: To provide electrical energy to satellites by solar cells.
(iii) Ultraviolet waves : These waves help in the identification of handwriting and to make other's signatures. These waves synthesize vitamin D in the skin of humans.
(iv) Radio waves : These waves are used in transmission of radio and television signals.
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