Question

Penetrating power of X-rays does not depend on:
1. Wavelength
2. Energy
3. Potential difference
4. Current in the filament

Answer 1

Correct Answer - Option 4 : Current in the filament

Concept:

• The electromagnetic wave of very high energy and very short wavelength which has capacity to penetrate the opaque material is called as X-rays.
• When electrons having very high energy strikes the metal surface then X-rays produces.

Explanation:

• When we increase the potential difference between anode and cathode then the energy of the striking electrons increases.
• Due to this high energy electrons falling on the metal surface, the X-rays produced gets more energy.
• The penetrating power of X-rays increases when we increase the energy of X-rays.
• Thus by increasing the potential difference between the cathode and anode, the penetrating power of X-rays increases.
• It does not depends on current in the filament.
• With increase in wavelength, penetrating power of any wave will decrease.