Question

Arrange the following electromagnetic radiations in increasing order of their frequency
• X-rays
• Infrared rays
• Visible rays
• Gamma rays Choose the correct answer from the options given below:

• A. A $<$ C $<$ D $<$ B
• B. C $<$ D $<$ A $<$ B
• C. D $<$ B $<$ C $<$ A
• D. B $<$ C $<$ A $<$ D

Hint:

In electromagnetic spectrum: \[ \text{Frequency increases from Infrared toward Gamma rays} \]

Answer 1

The Correct Option is D

Electromagnetic waves differ in frequency, wavelength, and energy. Frequency increases from radio waves toward gamma rays.

Step	Explanation
1. Electromagnetic spectrum order	Radio < Microwave < Infrared < Visible < Ultraviolet < X-rays < Gamma rays
2. Identify given radiations	Infrared rays < Visible rays < X-rays < Gamma rays
3. Symbolic notation	A → X-rays B → Infrared rays C → Visible rays D → Gamma rays Order: B < C < A < D
4. Final Answer	Correct option: (4) Increasing frequency order: Infrared < Visible < X-rays < Gamma rays