A

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Q. Which of the following waves can propagate in a vacuum?
1.Radio waves
2.Light waves
3.X-rays
4.Ultrasonic waves
Select the correct answer using the codes given below

  • (A) 1, 2 and 3
  • (B) 1, 2, 3 and 4
  • (C) 2, 3 and 4
  • (D) 1 and 4
  • Correct Answer - Option(C)
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