“Radio waves can penetrate dust clouds” is true about radio waves among given statements.
Explanation:
Radio waves are a type of electromagnetic radiation. The wavelengths in electromagnetic spectrum are longer than infrared light. The frequency of radio waves are higher than 300 gigahertz.
By analyzing this the astronomers can search about the characteristics of the cosmic resources. Radio waves are effectively useful for radio astronomers to discover the radio emissions from the sources like celestial. Common designations of radio waves are UV rays, gamma rays, microwaves, etc.
