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Intensity

Which of thes...

Question

Which of these light sources will have a cylindrical wave front?

A

Point source

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B

Infinite Line source

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C

Plane source

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D

Spherical source

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Solution

The correct option is B
Infinite Line source

A point source radiates energy equally in all direction

Same is true for a spherical source. Assuming it radiates energy equally in all directions

An infinite line source will radiate energy perpendicular to its surface in all direction. So the wave front will be…

Yup......Right again.

Cylindrical.

Plane source.

Planar light source will have planar wave fronts.

So correct answer is infinite line source will have a cylindrical wave front.

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