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  4. The difference between soft and hard X-rays is of

Q. The difference between soft and hard X-rays is of

 2560  242 Rajasthan PMTRajasthan PMT 2007Dual Nature of Radiation and Matter Report Error

Solution:

The penetrating power of rays depends upon their wavelength, which depends upon frequency.
The frequency of the longer wavelength rays is lower and so their energy is smaller. Hence, their penetrating power is weaker and they are called soft rays. While the penetrating power of the shorter wavelength rays is stronger and they are called hard or highly penetrating rays.