Question
Consider the following statements:
I. Light of longer wavelength are scattered much more than the light of shorter wavelength.
II. The speed of visible light in water is 0.95 times the speed in vacuum
III. Radio waves are produced by rapidly oscillating electrical currents.
IV. To detect the over speeding vehicles, police use the Doppler effect of reflected short radio waves.
Which of these statements are correct:
A
I and II
B
I and III
C
II and IV
D
III and IV
Answer & Explanation
Option: [D]
