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Consider the following parts of spectra:
 1. Visible
 2. Infrared
 3. Ultraviolet
 4. Microwave 
Q. Which of the following is the correct sequence in which the wavelengths increase?
  • a)
    4, 3, 1, 2
  • b)
    4, 1, 2, 3
  • c)
    3, 2, 1, 4
  • d)
    3, 1, 2, 4
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Consider the following parts of spectra:1. Visible2. Infrared3. Ultrav...
Ultra-violet rays < visible light < infrared radiation < microwaves (0.1 micrometres) (0.7 micrometres ) (0.01 mm) (less than 10 cm)
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Most Upvoted Answer
Consider the following parts of spectra:1. Visible2. Infrared3. Ultrav...
Explanation:

The correct sequence in which the wavelengths increase is option 'D', which is 3, 1, 2, 4.

Visible Spectrum:
- The visible spectrum refers to the range of electromagnetic radiation that is visible to the human eye.
- It consists of the colors of the rainbow, ranging from violet to red.
- Violet has the shortest wavelength, while red has the longest wavelength.

Infrared Spectrum:
- The infrared spectrum refers to the range of electromagnetic radiation with longer wavelengths than those of visible light.
- Infrared radiation is not visible to the human eye.
- It is commonly used in applications such as remote controls, night vision, and thermal imaging.
- Infrared radiation has longer wavelengths than visible light.

Ultraviolet Spectrum:
- The ultraviolet spectrum refers to the range of electromagnetic radiation with shorter wavelengths than those of visible light.
- Ultraviolet radiation is not visible to the human eye.
- It can cause harmful effects on living organisms, such as sunburn and skin cancer.
- Ultraviolet radiation has shorter wavelengths than visible light.

Microwave Spectrum:
- The microwave spectrum refers to the range of electromagnetic radiation with longer wavelengths than those of infrared radiation.
- Microwaves are commonly used in cooking and communication technologies.
- Microwaves have longer wavelengths than infrared radiation.

Comparing the Sequences:
- In option 'D', the correct sequence is 3, 1, 2, 4.
- Ultraviolet radiation (3) has shorter wavelengths than visible light (1).
- Infrared radiation (2) has longer wavelengths than visible light (1).
- Microwave radiation (4) has longer wavelengths than both visible light (1) and infrared radiation (2).
- Therefore, option 'D' is the correct sequence in which the wavelengths increase.
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Consider the following parts of spectra:1. Visible2. Infrared3. Ultraviolet4. MicrowaveQ. Which of the following is the correct sequence in which the wavelengths increase?a)4, 3, 1, 2b)4, 1, 2, 3c)3, 2, 1, 4d)3, 1, 2, 4Correct answer is option 'D'. Can you explain this answer?
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