Which of the following statements are true regarding Davisson - Germer experimental setup?
(i) Electrostatic particle accelerators are used to accelerates the electrons
(ii) Electron beam is fired from the electron gun to nickel crystal.
(iii) Detector used to capture the electrons.
1
Only (i) and (ii) are true
2
Only (ii) and (iii) are true
3
Only (i) and (iii) are true
4
All are true