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1. |
Consider the following statements1. 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 currents.4. To detect the overspending vehicles, police use the Doppler effect of reflected short radio wavesWhich of these statements are correct? |
A. | 1 and 2 |
B. | 1 and 3 |
C. | 2 and 4 |
D. | 3 and 4 |
Answer» E. | |