Q. |
Consider the following statements
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 osculating electrical currents.
4. To detect the over speeding vehicles, police use the Doppler effect of reflected short radiowaves.
Which of the statements are correct? |
| (a)1 and 2 | | (b)1 and 3 | | (c)2 and 4 | (d)4 and 3  |
|
