Question

With reference to the electromagnetic spectrum, the sequences of various parts of spectrum with increasing order of wave length should be as follows:
A. X-rays
B. Microwaves
C. Infrared
D. Gamma rays
E. Radio waves
Choose the correct answer from the options given below:

• A. A, E, B, C, D
• B. E, D, A, C, B
• C. D, A, C, B, E
• D. E, A, B, D, C

Hint:

A useful mnemonic for the EM spectrum (increasing wavelength) is: "Good Xylophones Usually Vibrate In Many Rooms" (Gamma, X-ray, UV, Visible, Infrared, Microwave, Radio).

Answer 1

The Correct Option is C

Step 1: Recall the order of the electromagnetic (EM) spectrum.
The EM spectrum is the range of all types of EM radiation, ordered by wavelength or frequency. Shorter wavelengths correspond to higher energy and higher frequency.
Step 2: Arrange the given types in order of increasing wavelength.
The general order from shortest to longest wavelength is:
Gamma rays \(\rightarrow\) X-rays \(\rightarrow\) Ultraviolet \(\rightarrow\) Visible Light \(\rightarrow\) Infrared \(\rightarrow\) Microwaves \(\rightarrow\) Radio waves.
Step 3: Map the given options to this sequence.
- Shortest wavelength: D. Gamma rays
- Next: A. X-rays
- Next: C. Infrared
- Next: B. Microwaves
- Longest wavelength: E. Radio waves
The correct sequence is D \(\rightarrow\) A \(\rightarrow\) C \(\rightarrow\) B \(\rightarrow\) E.