Coolis tube is used to produce

Radio waves
Micro waves
X-rays
Gama rays
X-rays  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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A. Electric field on current
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A. Rayleigh scattering
B. Mie scattering
C. Back scattering
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A. Concave lens
B. Convex lens
C. Convex mirror
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Which elements are malleable and good conductors of electricity?
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A. Reflected
B. Refracted
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Mach number is used in connection with the speed of
A. sound
B. aircraft
C. spacecraft
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