1 Marks Question

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3 questions · timed · auto-graded

Question 11 Mark

Can X-rays be polarized?

Answer

Only transverse waves can be polarized. Since an X-ray is a transverse wave, it can be polarized.

Question 21 Mark

The X-ray coming from a Coolidge tube has a cutoff wavelength of 80pm. Find the kinetic energy of the electrons hitting the target.

Answer

$\lambda=80\text{pm},$$\text{E}=\frac{\text{hc}}{\lambda}$
$=\frac{1242}{80\times10^{-3}}$
$=15.525\times10^3\text{eV}=15.5\text{KeV}$

Question 31 Mark

Can a hydrogen atom emit characteristic X-rays?

Answer

The difference of energy levels in a hydrogen atom is small. Hence, it is not able to emit characteristic X-rays.

Physics 1 Marks Question