Questions in Dual Nature of Radiation and Matter

Select	Question
	The wavelength of X-rays decreases, when
	X-rays are produced in laboratory by
	In vacuum an electron of energy 10 keV hits tungsten target, then emitted radiation will be
	X-rays of $\lambda = 1\,{\AA}$ have frequency
	Solid targets of different elements are bombarded by highly energetic electron beams. The frequency (f) of the characteristic X-rays emitted from different targets varies with atomic number Z as
	Compton effect shows that
	An X-ray tube with a copper target emits Cu ${K_\alpha }$ line of wavelength 1.50 Å. What should be the minimum voltage through which electrons are to be accelerated to produce this wavelength of X rays $(h = 6.63 \times {10^{ - 34}}J{\rm{ - }}\sec ,\;c = 3 \times {10^8}m/s)$
	In X-ray spectrum wavelength $\lambda$ of line ${K_\alpha }$ depends on atomic number Z as
	Absorption of X-ray is maximum in which of the following different sheets
	The wavelength of ${K_\alpha }$ line in copper is 1.54 Å. The ionisation energy of K electron in copper in Joule is