EduNinja

[Maximum number: 3]

(a)

Outline why Compton scattering offers better evidence for the particle nature of light than the photoelectric effect.

A photon of wavelength $6.40 \times 10^{-12} \mathrm{~m}$ and energy 0.194 MeV is incident on an electron at rest. The photon scatters at an angle $\theta$ with wavelength $7.47 \times 10^{-12} \mathrm{~m}$ . The electron recoils.

[ 2 ]

(b)

Calculate the kinetic energy of the recoiling electron.

[ 1 ]

$E=\lessdot 0.194-0.166=>0.028 \mathrm{MeV} \quad$

Accept 0.024 from the value given as show that.

Allow ECF from c) i)

Accept $4.5 \times 10^{-15} \mathrm{~J}$ .

IB Physics HL E 2 7 Hl Compton Scattering Topic Practice

Question 1

Question (a)

Question (b)