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The Wave Nature of Light

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Questions and Answers

Which one of the following is true about the direction of propagation of light waves in a homogeneous medium?

The direction of propagation is always parallel to the electric and magnetic fields

The direction of propagation is always perpendicular to the electric and magnetic fields (correct)

The direction of propagation is always perpendicular to the electric field and parallel to the magnetic field

The direction of propagation is always parallel to the electric field and perpendicular to the magnetic field

Which one of the following is the general mathematical form for propagation along the z-direction?

Ex = A * cos(kz + wt)

Ex = A * sin(kz - wt)

Ex = A * sin(kz + wt)

Ex = A * cos(kz - wt) (correct)

What does the phase constant ' represent in the general mathematical form for propagation along the z-direction?

Wavelength

Propagation constant (correct)

Amplitude of the wave

Phase of the wave

What is the wavelength represented by in the equation λ = c/f?

<p>Angular frequency</p> Signup and view all the answers

In any plane perpendicular to the direction of propagation, what is constant according to Eq. (1.1.1)?

<p>Phase of the wave</p> Signup and view all the answers

Study Notes

Light Wave Propagation

Light waves propagate in a straight line in a homogeneous medium.

Mathematical Form for Propagation

The general mathematical form for propagation along the z-direction is E(x, y, z, t) = E₀ cos(kz - ωt + φ).

Phase Constant

The phase constant 'φ' represents the phase angle of the wave function.

Wavelength

λ (lambda) represents the wavelength, which is the distance between two successive points on a wave that are in phase with each other, and is calculated by λ = c/f, where c is the speed of light and f is the frequency.

Properties of Light Waves

In any plane perpendicular to the direction of propagation, the amplitude E₀ is constant according to Eq. (1.1.1).

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Description

Test your knowledge on the wave nature of light, specifically light waves in a homogeneous medium. This quiz will cover topics such as electromagnetic waves, time-varying electric and magnetic fields, and the direction of propagation through space.