Abeam of photons with wavelength 150 nm and beam of electrons having the same energy as the photons go through the same slit of width 355 nm. you observe the diffraction pattern on a distant screen. all angles are measured from the centerline. the photons produce their first dark band at an angle α. is the magnitude of α bigger than, equal to, or smaller than the magnitude the angle, β, where the electrons produce their first dark band?

Explanation:

For moving particle , the wavelength is given by the expression

E is kinetic energy of the particle

Here particle is electron and its kinetic energy

E = 150 nm

= 1244 / 150

= 8.3 eV

8.3 X 1.6 X 10⁻¹⁹ J

=13.28 X 10⁻¹⁹ J

Putting these values in the expression for wavelength as given above we have

λ = .425 nm

Wave length of electron wave will be 0.425 nm

Hence its wavelength will be smaller and therefore magnitude of angle made by it will also be smaller. So magnitude of β will be smaller than that of α .

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia