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:
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A hard Science & Technology multiple-choice question from UPSC Prelims 2026. Attempt it above, then check the correct answer and detailed explanation below.
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Correct answer: C. 1 and 2 only
Statements 1 and 2 are correct — stealth objects have a small radar cross-section and Radar Absorbing Material, and can still be detected using specific (e.g., low) frequencies. Statement 3 is wrong — metamaterials are used to reduce/redirect (not increase) the scattering of electromagnetic radiation.
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