In free space, an electromagnetic wave of 3 GHz of 3 GHz frequency strikes over the edge of an object of size (λ/100), where λ is the wavelength of the wave in free space. The phenomenon, which happens there will be:

Question

In free space, an electromagnetic wave of 3 GHz of 3 GHz frequency strikes over the edge of an object of size (λ/100), where λ is the wavelength of the wave in free space. The phenomenon, which happens there will be: (A) Reflection (B) Refraction (C) Diffraction (D) Scattering

Tardigrade Admin · Accepted Answer

( a /λ)=(1/100) For reflection size of obstacle must be much larger than wavelength, for diffraction size should be order of wavelength. Since the object is of size (λ/100), much smaller than wavelength, so scattering will occur.

Q. In free space, an electromagnetic wave of $3 G Hz$ of $3 G Hz$ frequency strikes over the edge of an object of size $\frac{λ}{100}$ , where $λ$ is the wavelength of the wave in free space. The phenomenon, which happens there will be:

Reflection

Refraction

Diffraction

Scattering

$\frac{a}{λ} = \frac{1}{100}$
For reflection size of obstacle must be much larger than wavelength, for diffraction size should be order of wavelength.
Since the object is of size $\frac{λ}{100}$ , much smaller than wavelength, so scattering will occur.

Q. In free space, an electromagnetic wave of 3GHz of 3GHz frequency strikes over the edge of an object of size 100λ​, where λ is the wavelength of the wave in free space. The phenomenon, which happens there will be: