Multiple choice general knowledge What is Tejas It is a lightweight multirole jet fighter It is a mechanical wave that is an oscillation of pressure transmitted through a solid, liquid, or gas. Device to help fuel economy Sound device Reveal answer Fill a bubble to check yourself A Correct answer Explanation Tejas is India's indigenously developed lightweight multirole fighter aircraft under the Light Combat Aircraft (LCA) program. The other options are incorrect - it's not a mechanical wave, fuel device, or sound device.