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. A

   1 only

   1 only: This option is incorrect because while statement 1 is correct, statement 2 is also correct as stealth objects can still be detected under certain conditions using specific frequencies or low-frequency radars.

2. B

   2 and 3 only

   2 and 3 only: This option is incorrect because statement 3 is factually wrong; stealth technology uses Radar Absorbing Materials (RAM) and shaping to reduce or absorb the scattering of electromagnetic radiation, not increase it via metamaterials for higher scattering.

3. C

   1 and 2 only

   1 and 2 only. Statement 1 is correct as stealth platforms are engineered with specialized shaping and coated with Radar Absorbing Material (RAM) to minimize their radar cross-section (RCS). Statement 2 is correct because stealth technology is not absolute; low-frequency radars and multi-static radar systems can detect stealth objects using specific frequencies.

4. D

   1, 2 and 3

   1, 2 and 3: This option is incorrect because statement 3 is wrong, as increasing the scattering of electromagnetic radiation would increase the radar signature rather than hide the object. Summary. Official key is (c). Stealth technology relies on reducing radar cross-section through geometry and radar-absorbing materials (Statement 1), but these objects remain partially detectable under specific low-frequency radar emissions (Statement 2). Statement 3 is incorrect because stealth designs aim to minimize, not increase, electromagnetic scattering.

Summary. Official key is (c). Stealth technology relies on reducing radar cross-section through geometry and radar-absorbing materials (Statement 1), but these objects remain partially detectable under specific low-frequency radar emissions (Statement 2). Statement 3 is incorrect because stealth designs aim to minimize, not increase, electromagnetic scattering.