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: Identify the order of the electromagnetic (EM) spectrum.
The EM spectrum encompasses all EM radiation types, arranged by wavelength or frequency. Shorter wavelengths signify greater energy and higher frequency.
Step 2: Order the provided types by increasing wavelength.
The standard 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: Match the given options to this order.
- Shortest wavelength: D. Gamma rays
- Next: A. X-rays
- Next: C. Infrared
- Next: B. Microwaves
- Longest wavelength: E. Radio waves
The resulting sequence is D \(\rightarrow\) A \(\rightarrow\) C \(\rightarrow\) B \(\rightarrow\) E.