Question

What is the wavefront & write it's type

Answer 1

HERE IS YOUR ANSWER MATE:-

Wavefront is a surface over which an optical wave has a constant phase....such a surface which envelopes a particles that are in the same state of vibration is known as wave front.

Wavefront has 3 types:-

1. spherical wavefront
2. cylindrical wavefront
3. plane wavefront

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Answer 2

Wave front, imaginary surface representing corresponding points of a wave that vibrate in unison.

Wavefronts can be of three types depending on the source of light as follows:

• Cylindrical wavefront
• Spherical wavefront
• Plane wavefront

Cylindrical wavefront

When the source of light is linear, all the points equidistant from the linear source lie on the surface of a cylinder. Such a wavefront is called a cylindrical wavefront

Spherical Wavefront

When a point source in an isotropic medium, it sends out waves in three dimensions, the wavefronts are spheres centred on the source. Such wavefront is called a spherical wavefront.

Plane wavefront

When a fraction of a spherical or cylindrical wavefront originates from a distant source like infinity then the wavefront which is obtained is known as a plane wavefront.

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