Question

Arrange the following in the ascending order of wavelength:
(A) Gamma rays (\( \lambda_1 \))
(B) X-ray (\( \lambda_2 \))
(C) Infrared waves (\( \lambda_3 \))
(D) Microwaves (\( \lambda_4 \))
Choose the most appropriate answer from the options given below:

• A. \( \lambda_4<\lambda_3<\lambda_1<\lambda_2 \)
• B. \( \lambda_4<\lambda_3<\lambda_2<\lambda_1 \)
• C. \( \lambda_1<\lambda_2<\lambda_3<\lambda_4 \)
• D. \( \lambda_2<\lambda_1<\lambda_4<\lambda_3 \)

Answer 1

The Correct Option is C

The wavelength order for different types of electromagnetic waves from shortest to longest is as follows:

1. **Gamma rays** (λ₁) have the shortest wavelength.
2. **X-rays** (λ₂) have a slightly longer wavelength than gamma rays.
3. **Infrared waves** (λ₃) have a longer wavelength than X-rays.
4. **Microwaves** (λ₄) have the longest wavelength among these options.

Therefore, the ascending order of wavelength is:
λ₁ < λ₂ < λ₃ < λ₄.

Answer: λ₁ < λ₂ < λ₃ < λ₄