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Chapter 15: Problem 2202

Which of the following electromagnetic wave has the least wavelength? (A) radiowave (B) visible wave (C) ultraviolet rays (D) microwaves

Short Answer

Expert verified
The electromagnetic wave with the least wavelength among the given options is (C) ultraviolet rays.

Step by step solution

01

Remember the electromagnetic spectrum

The electromagnetic spectrum is the range of all types of electromagnetic waves, ordered by their frequency and wavelength. It includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. The order of the waves in the spectrum is important for comparison.
02

Identify the order of the given waves

According to the electromagnetic spectrum, the order of the given waves from largest to smallest wavelength is: 1. Radiowaves 2. Microwaves 3. Visible waves 4. Ultraviolet rays
03

Determine the wave with the least wavelength

As we can see from the order of the waves in the spectrum, the wave with the least wavelength among the given options is ultraviolet rays.
04

Choose the correct answer

Now that we have determined the wave with the least wavelength, we can choose the correct answer from the options provided. The answer is: (C) ultraviolet rays

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Most popular questions from this chapter

An observer is at \(2 \mathrm{~m}\) from an isotropic point source of light emitting \(40 \mathrm{w}\) power. The rm.s value of electric due to the source at the position of the observer is (A) \(5.77 \times 10^{-8} \mathrm{Vm}^{-1}\) (B) \(17.3 \mathrm{Vm}^{-1}\) (C) \(57.7 \times 10^{-8} \mathrm{Vm}^{-1}\) (D) \(1.73 \mathrm{Vm}^{-1}\)

What is the name associated with the equation \(E^{\longrightarrow} \cdot d t^{-}=-(d \Phi \beta / d t)\) (A) Gauss law for electricity (B) Gauss law for magnetism (C) ampere's law (D) faraday's law

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At room temperature, if the relative permittivity of water is 80 and the relative permeability be \(0.0222\) then the velocity of light in water is \(\mathrm{m} / \mathrm{s}\) (A) \(2.5 \times 10^{8}\) (B) \(2.26 \times 10^{8}\) (C) \(3.5 \times 10^{8}\) (D) \(3 \times 10^{8}\)

In an electromagnetic wave in free space, the direction of electric field vector \(E^{-}\) is along \(y\) axis and magnetic field vector \(\mathrm{B}^{-}\) is along \(\mathrm{z}\) axis then which of the following is true (A) $\left(\mathrm{E}^{-} \times \mathrm{B}^{-}\right) \times \mathrm{E}^{-}=1$ (B) $\left(\mathrm{E}^{-} \times \mathrm{B}^{-}\right) \times \mathrm{B}^{-}=1$ (C) $\left(\mathrm{E}^{-} \times \mathrm{B}^{-}\right) \times \mathrm{B}^{-}=0$ (D) none of these
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