The difference between soft and hard X-rays is of:
Correct answer: C. Frequency
- A. Velocity
- B. Intensity
- C. Frequency
- D. Polarization
Explanation
The penetrating power of X− rays depends upon their wavelength, which depends upon frequency. The frequency of the longer wavelength X− rays are lower and so their energy is smaller. Hence, their penetrating power is weaker and they are called soft X− rays. While the penetrating power of the shorter wavelength X− rays is stronger and they are called hard or highly penetrating X− rays.
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