Which of the following is electromagnetic waves?
Correct answer: A. Light waves
- A. Light waves
- B. Sound waves
- C. Water waves
- D. Waves along a stretched string
Explanation
Light is an example of an electromagnetic wave. It's part of the electromagnetic spectrum, which includes a range of waves varying in frequency and wavelength, from radio waves to gamma rays. Light specifically refers to the visible part of the electromagnetic spectrum that humans can perceive with their eyes.
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A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
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