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Chapter 15: Problem 2129

Which of the following electromagnetic waves has the highest frequency? (A) radiowaves (B) microwaves (C) \(\gamma\) rays (D) \(\mathrm{x}\) rays

Short Answer

Expert verified
The electromagnetic wave with the highest frequency among the given options is \( (C) \ \gamma \textrm{-rays} \).

Step by step solution

01

Identify the given electromagnetic waves

We have the following electromagnetic waves in the given options: (A) Radio waves (B) Microwaves (C) Gamma rays (D) X-rays
02

Determine their positions in the electromagnetic spectrum

We can list the given waves in order according to their positions in the spectrum: 1. Radio waves 2. Microwaves 3. X-rays 4. Gamma rays
03

Identify the wave with the highest frequency

As we go from radio waves to gamma rays in the electromagnetic spectrum, the frequency of the waves increases. So, the electromagnetic wave with the highest frequency in the given options is: \( (C) \ \gamma \textrm{-rays} \) Therefore, the electromagnetic wave with the highest frequency among the given options is gamma rays.

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Most popular questions from this chapter

The sun delivers \(10^{3} \mathrm{Wm}^{-2}\) of electromagnetic flux to earth's surface. The total power that is incident on a roof of dimension $8 \mathrm{~m} \times 20 \mathrm{~m}$ will be (A) \(4 \times 10^{5} \mathrm{w}\) (B) \(2.56 \times 10^{4} \mathrm{w}\) (C) \(6.4 \times 10^{5} \mathrm{w}\) (D) \(1.6 \times 10^{5} \mathrm{w}\)

Which of the following electromagnetic waves is used in telecommunication? (A) radiowaves (B) visible radiations (C) ultraviolet rays (D) microwaves

The dimensional formula of energy density is (A) \(\mathrm{M}^{1} \mathrm{~L}^{0} \mathrm{~T}^{-2}\) (B) \(\mathrm{M}^{1} \mathrm{~L}^{-1} \mathrm{~T}^{-2}\) (C) \(\mathrm{M}^{1} \mathrm{~L}^{-1} \mathrm{~T}^{-3}\) (D) \(\mathrm{M}^{\mathrm{l}} \mathrm{L}^{0} \mathrm{~T}^{-3}\)

Energy density of an electromagnetic wave of intensity \(0.02 \mathrm{Wm}^{-2}\) is (A) \(6.67 \times 10^{-11} \mathrm{Jm}^{-3}\) (B) \(6 \times 10^{6} \mathrm{Jm}^{-3}\) (C) \(1.5 \times 10^{10} \mathrm{Jm}^{-3}\) (D) none of the above

If the direction of magnetic field \(\mathrm{B}^{\rightarrow}\) at some instant is along + ve \(Z\) direction and the electromagnetic wave is propagating along + ve \(\mathrm{X}\) direction, then the direction of electric field \(\mathrm{E}^{\rightarrow}\) at that instant is (A) along - ve Y direction (B) along + ve Y direction (C) along + ve \(\mathrm{X}\) direction (B) along - ve \(\mathrm{X}\) direction
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