Of these electromagnetic waves, which has

Explanation :

(1) Wavelength of a wave is defined as the distance between two consecutive crests or troughs.

In this case, the distance between two consecutive crests is maximum in B.

(2) The energy of the wave depends on its amplitude. In this case, C shows maximum amplitude. So, it will have greatest energy.

(3) number of cycles per unit time is called frequency of the wave. In this case, C will have maximum frequency.

(4) The amplitude of the wave is the maximum displacement of the particle. In this case, wave A have the lowest amplitude.

Hence, this is the required solution.                                                                                                                    

Further Explanation:

The electromagnetic waves have three basic properties and these basic properties of the electromagnetic waves determine its other properties like energy, strength etc.

Part 1:

Wavelength:

The wavelength of an electromagnetic wave is the length of the one full oscillation of the wave about its equilibrium position.

Therefore, the above shown diagrams, the wave in the figure B has the maximum wavelength as it covers the maximum distance in completing its one oscillation about the equilibrium position.

Thus, the longest wavelength is of the wave shown in figure B.

Part 2:

Energy:

The energy associated with an electromagnetic wave is determined by the amplitude of oscillation of the wave about its equilibrium position.

The wave having higher amplitude of oscillation is considered to have higher energy and vice versa.

Thus, the greatest energy is of the wave shown in figure C.

Part 3:

Frequency:

The frequency of an electromagnetic wave is the number of oscillations performed by the wave in one second while propagating through the medium.

The frequency of a wave is higher if it completes the more number of oscillations in the same time as compared to the other wave.

Thus, the greatest frequency is of the wave shown in figure C.

Part 4:

Amplitude:

The amplitude of oscillation of an electromagnetic wave is the maximum distance covered by the wave on one side of its equilibrium position.

In the above shown figure, the wave in the option A covers the minimum distance along the vertical axis about its equilibrium position.

Thus, the lowest amplitude is of the wave shown in figure A.

Learn More:

1. Calculate the wavelength of an electron (m = 9.11 × 10-28 g) moving at 3.66 × 106 m/s

2. Microwave ovens emit microwave energy with a wavelength of 12.5 cm

3. What is the kinetic energy of the emitted electrons when cesium is exposed to uv rays of frequency 1.9×1015hz

Answer Details:

Grade: High School

Subject: Physics

Chapter: Waves

Keywords:

Electromagnetic waves, longest wavelength, greatest frequency, greatest energy, lowest amplitude, number of oscillations, about the equilibrium, distance.

at positions a, g kinetic energy is maximum.

at position d, potential energy is maximum.