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A rectangular illuminated slit produces...

A rectangular illuminated slit produces

A

spherical wave front

B

plane wavefront

C

cylindrical wavefront

D

all the above

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding the Question**: The question asks what type of wave front is produced by a rectangular illuminated slit. 2. **Identifying the Shape of the Slit**: A rectangular slit is a linear source of light. This means that the light is emitted from a line rather than a point. 3. **Wave Front Characteristics**: When a light source is linear (like a rectangular slit), the wave front produced is not spherical (which would be the case for point sources) but cylindrical. This is because the light waves emanate from the entire length of the slit. 4. **Conclusion**: Therefore, a rectangular illuminated slit produces cylindrical wave fronts. 5. **Final Answer**: The correct answer is that a rectangular illuminated slit produces cylindrical wave fronts. ---
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