Civil Services Prep

Prelims 2026 · Science and Technology · Question 43

Which of the following statements with regard to stealth technology is/are correct ?

  1. Stealth objects have a very small radar cross-section and are coated with Radar Absorbing Material.
  2. Stealth objects can be detected using specific frequencies.
  3. Stealth objects are coated with metamaterials to increase the scattering of electromagnetic radiation.

Select the answer using the code given below :

  1. 1 only
  2. 2 and 3 only
  3. 1 and 2 only
  4. 1, 2 and 3

Answer

1 and 2 only

1 is correct: stealth relies on reducing radar cross-section and using radar-absorbing materials/coatings. 2 is also correct in the broad sense that stealth targets can still be detected by certain radar approaches/frequency regimes, even if tracking and engagement remain harder. 3 is incorrect because stealth materials are used to reduce reflection/backscatter or absorb incident waves, not to increase scattering for easier detection.

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