When the dust is too thick to penetrate with visible light, such as the Nebula, Radio Waves are used to penetrate the dust. Longer radio waves can completely penetrate the thick cloud cover, allowing scientists to beam radar waves.
Answer:
intensity because square of the amplitude is proportional to the intensity of the wave
Explanation:
a. It occures in binary systems where one of them is a whitedwarf
We know, Period = 1/frequency = 1/20 sec.
So, your final answer is 0.05 sec
Hope this helps!
