Radio Astronomy — MCQs

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1. Radio astronomy studies which type of electromagnetic waves?





2. Who is regarded as the father of radio astronomy?





3. The first detection of cosmic radio waves was made in:





4. The largest single-dish radio telescope is located in:





5. The name of China’s giant radio telescope is:





6. The Arecibo telescope was located in:





7. Radio telescopes are usually built in:





8. The Very Large Array (VLA) is located in:





9. The world’s largest radio telescope array project is called:





10. SKA stands for:





11. Which type of radiation passes easily through clouds and atmosphere, making ground-based observations possible?





12. Radio waves from space are usually detected with:





13. What was the first astronomical object detected in radio waves?





14. The discovery of pulsars was made using:





15. Pulsars were first discovered by:





16. Radio interferometry improves:





17. The process of combining signals from multiple radio telescopes is called:





18. The Atacama Large Millimeter Array (ALMA) is located in:





19. Which planet in our Solar System is a strong source of radio waves?





20. The cosmic microwave background radiation was discovered in:





21. Who discovered the cosmic microwave background radiation?





22. Which part of the day is best for radio astronomy?





23. Why do radio telescopes have large dishes?





24. Which of the following can be studied with radio astronomy?





25. The first radio telescope built by Grote Reber was in:





26. A major challenge in radio astronomy is:





27. The unit of frequency used in radio astronomy is:





28. Quasars were first identified through:





29. The Parkes radio telescope is located in:





30. Radio waves are:





31. Which type of celestial object was first studied in detail using radio astronomy?





32. VLBI stands for:





33. The first pulsar discovered was nicknamed:





34. Radio galaxies emit most of their energy in:





35. Which telescope collapsed in 2020?





36. The wavelength range of radio astronomy is approximately:





37. The Indian GMRT stands for:





38. Radio telescopes can operate:





39. Which technique allows global networks of radio telescopes to work together?





40. The strongest natural radio source in the sky is:





41. Radio waves travel at the speed of:





42. Why is space-based radio astronomy less common than optical astronomy?





43. Which Nobel Prize was awarded for the discovery of pulsars?





44. Radio quasars appear as:





45. Which band of frequencies is often protected for radio astronomy?





46. The 21 cm radio line corresponds to:





47. Radio astronomy played a key role in proving:





48. Which telescope is part of the Event Horizon Telescope (EHT) project?





49. Radio astronomy can detect signals from:





50. The main challenge in building the Square Kilometre Array is:





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