Question

Monochromatic light from a point source is directed toward the sharp edge of a solid object. How does diffraction change the image that appears on a screen beyond the object?
Why are diffraction patterns not commonly observed in everyday situations?

Answer 1

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Answer 2

Monochromatic light from a point source is directed toward the sharp edge of a solid object.

• A spot will be seen on the screen after diffraction.

• The size of the obstructing object is greater than the wavelength of the incident light in everyday situations, so we are not able to view diffraction patterns in everyday situations.

Explanation:

When a monochromatic light from a point source is directed toward the sharp edge of a solid object, the light beam will get diffracted from the edge as the body of the solid object will not be passing the light. So the incident light will occur as a spots on the screen beyond the object after diffraction.

Diffraction of light occurs when the incident light falls on a grater and the width of the grater or the obstructing object should be comparable or lesser to the size of the wavelength. So, in everyday situations we do not observe diffraction patterns as the obstructing objects in real world.