An electron vibrating to and fro 1000 times per second generates ...

[RODY.ELKHALIL]

An electron vibrating to and fro 1000 times per second generates an electromagnetic wave having a
 
  A) period of 1000 s.
  B) speed of 1000 m/s.
  C) wavelength of 1000 m.
  D) frequency of 1000 Hz.

Question 2

If a light signal and a radio signal were emitted simultaneously from the Moon, the first signal to reach Earth would be
 
  A) radio.
  B) light.
  C) both of these
  D) none of the above

[cici]

Answer to Question 1

Answer: D

Answer to Question 2

Answer: C

[RODY.ELKHALIL]

Thanks for the timely response, appreciate it

[Viet Thy]

Great answer, keep it coming