Which of the following have smaller wavelength?
Correct answer: A. Y -rays
- A. Y -rays
- B. X-rays
- C. Ultraviolet rays
- D. Infra-red rays
Explanation
Among the options provided:- Gamma rays have smaller wavelengths compared to infrared (IR), ultraviolet (UV), and X-rays.In the electromagnetic spectrum, gamma rays have the shortest wavelengths, falling within the range of picometers (10^-12 meters) to femtometers (10^-15 meters). They have extremely high frequencies and energies, making them very penetrating and ionizing radiation.In comparison:- Infrared waves have longer wavelengths than gamma rays, typically ranging from micrometers (10^-6 meters) to millimeters.- Ultraviolet waves have wavelengths shorter than visible light but longer than X-rays, falling in the range of nanometers (10^-9 meters).- X-rays have wavelengths shorter than UV rays, usually ranging from picometers to nanometers.Therefore, gamma rays have the smallest wavelengths among the options listed.
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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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