High-frequency vibration is of:
Correct answer: B. 0.1 MHz
- A. 10 kHz
- B. 0.1 MHz
- C. 1 kHz
- D. 1000Hz
Explanation
Explanation:Frequency is measured in Hertz (Hz). Higher frequency means more cycles per second.1 kHz = 1000 Hz, 1 MHz = 1,000,000 Hz.0.1 MHz = 100,000 Hz, which is the highest frequency among the given options.10 kHz is 10,000 Hz. 1000Hz is 1 kHz.
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Electromagnetic waves consist of mutually perpendicular, oscillating electric and magnetic fields that also remain perpendicular to the direction of propagation. They travel through vacuum at the speed of light and include radio waves, microwaves, infrared, visible, ultraviolet, X-rays and gamma rays. Unlike mechanical waves, they do not require a material medium.
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