Application of low temperatures (Cryogenics) is in
Cryogenic engines are rocket engines that use cryogenic propellants, which are liquefied gases stored at extremely low temperatures. Typically, liquid hydrogen and liquid oxygen are used. These engines offer high efficiency and thrust, making them essential for space exploration. Their development is complex due to the need for advanced cooling and insulation technologies. Cryogenics finds application in space travel for fuel, surgery for cryotherapy, and magnetic resonance imaging for superconducting magnets.
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The correct answer is [A] Space travel, surgery, and magnetic resonance. Cryogenics, the study of extremely low temperatures, finds diverse applications. In space travel, cryogenic fuels like liquid hydrogen and oxygen power rockets efficiently. Surgery benefits from cryogenic techniques, such as cryotherapy, where low temperatures are used to freeze and remove abnormal tissues. Magnetic resonance imaging (MRI) relies on superconducting magnets cooled by cryogens to generate the strong magnetic fields necessary for imaging the body’s internal structures with high resolution. These magnets must be kept at extremely low temperatures to maintain superconductivity. Thus, cryogenics plays a crucial role in enabling space exploration, improving medical treatments, and advancing imaging technologies. The other options [B] Surgery, Magnetic Propulsion and Telemetry, [C] In space travel, surgery, and telemetry, and [D] In space travel, magnetic attraction, and telemetry, do not accurately reflect the primary applications of cryogenics.