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Consider the following statements [CSE (Pre) 2002] (1) Light of longer wavelength is scattered much more than the light of shorter wavelength. (2) The speed of visible light in water is 0.95 times the speed in vacuum. (3) Radio waves are produced by rapidly oscillating electrical current. (4) To detect the over speeding vehicles, police use the Doppler effect of reflected short radio waves. Which of these statements are correct?

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Consider the following statements [CSE (Pre) 2002] (1) Light of longer wavelength is scattered much more than the light of shorter wavelength. (2) The speed of visible light in water is 0.95 times the speed in vacuum. (3) Radio waves are produced by rapidly oscillating electrical current. (4) To detect the over speeding vehicles, police use the Doppler effect of reflected short radio waves. Which of these statements are correct?






 
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