Q. Consider the following statements regarding radio galaxies:
1.These are galaxies that emit exceptionally strong radio waves, far brighter than typical galaxies.
2.They usually appear in pairs, positioned on opposite sides of the galaxy.
Which of the statements given above is/are correct?
Answer: C
Notes:
Explanation: Both are correct
Statement 1 is correct: Radio galaxies are galaxies that emit exceptionally strong radio waves, far brighter than typical galaxies. Their radio emission comes from giant lobes of plasma that extend far beyond the galaxy’s visible stars.
Statement 2 is correct: They usually appear in pairs, positioned on opposite sides of the galaxy. The radiation is produced by synchrotron emission, electrons moving near light speed in magnetic fields.
Source: PIB
