Multiple choice general knowledge science & technology

This method is not used for blackhole detection

  1. Optical Lansing

  2. Cosmic Rays

  3. Gravity

  4. Light Detection using Prism spectrum
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Black holes are detected through multiple methods: gravitational effects on nearby stars and gas (accretion disks), X-ray emissions from superheated matter, and gravitational waves from mergers. Optical observations can detect indirect effects but black holes don't emit visible light. Using a prism for spectrum analysis is primarily a laboratory technique for studying light, not a method for black hole detection.

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