Electromagnetic Spectrum Interview Questions & Answers

Best Electromagnetic Spectrum Interview Questions and Answers

Dear Readers, Welcome to Electromagnetic Spectrum Interview Questions and Answers have been designed specially to get you acquainted with the nature of questions you may encounter during your Job interview for the subject of Electromagnetic Spectrum. These Electromagnetic Spectrum Questions are very important for campus placement test and job interviews. As per my experience good interviewers hardly plan to ask any particular questions during your Job interview and these model questions are asked in the online technical test and interview of many IT & Non IT Industries.

1. Define electromagnetic spectrum.

Electromagnetic spectrum is the range of all the frequencies or wavelengths of electromagnetic radiation.

2. Define electromagnetic radiation.

Electromagnetic radiation is a form of energy in which electric, magnetic fields are mutually perpendicular to each other, and these two electric, and magnetic fields are perpendicular to the direction of wave propagation.

3. What are the various types of electromagnetic radiation?

The various types of electromagnetic radiation include:

• Gamma rays
• X-rays
• Ultraviolet light
• Visible light
• Infrared radiation
• Microwaves
• Radio waves

4. Which type of electromagnetic wave has the longest wavelength?

Radio waves

5. Which type of electromagnetic wave has the shortest wavelength?

Gamma rays 

6. What is the use of radio waves?

Radio waves are mainly used for fixed and mobile radio communication.

7. What is the wavelength range and frequency range of radio waves?

Radio waves have the wavelength ranging from 1mm to 100km and frequencies ranging from 3KHZ to 300GHZ.

8. What is the use of microwaves?

Microwaves are used in microwave ovens, telemetry, and radar.

9. What is the wavelength range of microwaves?

Microwaves have the wavelength ranging from 10 micrometer to 10 meter.

10. What is the use of infrared rays?

Infrared rays are used in cameras for night vision and in medical treatments.

11. Who discovered infrared radiation?

William Herschel discovered infrared radiation in 1800.

12. What are the different colors of visible light?

The different colors of visible light include:

• Red light
• Orange light
• Yellow light
• Green light
• Blue light
• Indigo light
• Violet light

13. What is the use of ultraviolet light?

Ultraviolet light is used to kill bacteria and other microbes.

14. What is the wavelength range of ultraviolet light?

Ultraviolet light has the wavelengths ranging from 100 nanometers to 400 nanometers.

15. What is the use of X-rays?

X-rays are used to identify the bone fractures by passing radiation into internal body.

16. What is the wavelength range of gamma rays?

Gamma rays have the wavelengths ranging from 0.0001 nanometer to 0.1 nanometer.

17. What is the use of gamma rays?

Gamma rays are used to kill cancerous cells.