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| Q. |
Coolis tube is used to produce – |
| A. | Radio waves |
| B. | Micro waves |
| C. | X-rays |
| D. | Gama rays |
| Answer» C. X-rays | |
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Explanation: X-rays are part of the electromagnetic spectrum, an ionizing radiation with wavelengths shorter than ultraviolet light. X-ray tubes evolved from experimental Crookes tubes with which X-rays were first discovered in the late 19th century, and the availability of this controllable source of X-rays created the field of radiography, the imaging of opaque objects with penetrating radiation. |
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