🔍 Free Preview — first 3 questions
Question 1
The photoelectric effect proves the:
AWave nature of light
BParticle (photon) nature of light
CDual nature of matter
DElectromagnetic theory
Question 2
According to de Broglie hypothesis, a particle of momentum p has an associated wavelength of:
Aλ = hp
Bλ = h/p
Cλ = p/h
Dλ = h²/p
Question 3
The atomic number of an element represents the number of:
ANeutrons in the nucleus
BProtons in the nucleus (equals electrons in neutral atom)
CNucleons (protons + neutrons)
DElectron shells