Low temperatures (Cryogenics) find application in
- Aspace travel, surgery and magnetic levitationCorrect
- Bsurgery, magnetic levitation and telemetry
- Cspace travel, surgery and telemetry
- Dspace travel, magnetic levitation and telemetry
Explanation
The correct answer is A because cryogenic technology, which involves materials at extremely low temperatures, is essential in three specific fields. In space travel, liquid oxygen and liquid hydrogen are used as cryogenic fuels in rocket engines to provide high thrust. In surgery, cryosurgery uses extreme cold to destroy abnormal or diseased tissues, such as tumors. In magnetic levitation, cryogenics are used to cool superconducting magnets to temperatures where they lose electrical resistance, allowing trains to float and travel at high speeds. Telemetry, mentioned in the other options, refers to the wireless transmission of data and does not fundamentally require low temperatures to function.
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