The size of an obstacle in order to observe diffraction of light must be

Question

The size of an obstacle in order to observe diffraction of light must be (A) of any order (B) of the order of wavelength (C) much larger than wavelength (D) much smaller than wavelength

Tardigrade Admin · Accepted Answer

Diffraction refers to various phenomenon associated with wave propagation, such as bending spreading and interference of waves emerging from aperture. While diffraction always occurs its effects are generally only noticeable for waves where the wavelength is of the order of the feature size of the diffracting objects or apertures,

Q. The size of an obstacle in order to observe diffraction of light must be

of any order

of the order of wavelength

much larger than wavelength

much smaller than wavelength