Question

The wavelength range of X-rays is _____________

(a) 1 mm to 700 nm

(b) 400 nm to 1 nm

(c) 1 nm to 0.001 nm

(d) 0.1 m to 1 mm

I have been asked this question in quiz.

Origin of the question is X Rays topic in chapter Quantum Physics of Engineering Physics I

Answer 1

The correct answer is (c) 1 nm to 0.001 nm

To explain I would say: X-ray lies beyond the UV region of the electromagnetic spectrum. Its wavelength range is from 1 nm to 0.001 nm. Beyond X-rays lies Gamma rays.