Huygen's Principal - NEET Physics Questions

Question 1: easy

Spherical wavefronts shown in fig, strike a plane mirror. Reflected wavefronts will be as shown in:

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Question 2: easy

Light waves travel in vaccum along the y-axis. Which of the following may represent the wavefront?

1. \(x =\text{ constant}\)

2. \(y =\text{ constant}\)

3. \(z =\text{ constant}\)

4. \(x + y + z =\text{ constant}\)

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Wavefronts are surfaces of constant phase which are perpendicular to the direction of propagation. Since propagation is along the y-axis, the wavefront must be parallel to the x-z plane, represented by \(y =\text{ constant}\).

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