Fluorescence is the property of absorbing radiant energy of _frequency and re-emitting energy of _ frequency in the visible region of the electromagnetic spectrum.
Correct answer: B. High; low
- A. Low; high
- B. High; low
- C. Low; low
- D. High; high
Explanation
The correct option is B (High frequency...low frequency) because fluorescence involves the absorption of energy of high frequency (short wavelength) and the re-emission of energy of lower frequency (longer wavelength) in the visible region of the electromagnetic spectrum. This shift in frequency results in the phenomenon of fluorescence.
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Magnetic flux density and magnetic flux describe the strength of a magnetic field and the field passing through a surface. A charged particle moving through a magnetic field experiences a force perpendicular to its velocity and may follow circular or helical motion, depending on the angle between velocity and field.
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