Question

X-rays obtained by coolidge tube are :-

• A. mono-chromatic
• B. of all wave lengths below a maximum wavelength
• C. of all wave length above a minimum wave length
• D. of all wave length between a maximum and a minimum wave length

Answer 1

The correct option is C of all wave length above a minimum wave length

Solution

The x - rays by Coolidge tube here

wavelength grater than a minimum

wavelength known as cut off wavelength.

As the energy that can be possessed

by the ray photon has a certain

maximum length and as wavelength

and energy of photon are inversely

related, for a lower energy, wavelength

should be higher than the wavelength

corresponding to maximum energy.

Option - C is correct.