CAPE Physics Unit 2 · 2003 · Paper 2 · Question 8(c)
Explain whether or not red light will cause electrons to be emitted from sodium in (b).
The mark scheme is shown once you've answered.
Practise this questionOther parts of this question
- 8(a)(i)Explain what is meant by wave-particle duality.[2 marks]
- 8(a)(ii)Explain what is meant by de-Broglie hypothesis.[3 marks]
- 8(a)(iii)Explain what is meant by the photoelectric effect.[3 marks]
- 8(b)(i)Find its threshold wavelength.[2 marks]
- 8(b)(ii)Find the maximum energy of the photoelectrons when the metal is illuminated by light of wavelength 4 x 10^-7 m.[3 marks]
- 8(b)(iii)Find the stopping potential.[2 marks]
More practice: the rest of this paper · more Particulate Nature of Electromagnetic Radiation questions · all CAPE Physics Unit 2 past papers