This online test contains MCQs about following topics:.
a) Describe energy of photon E =hf .
b) Understand the concept of photoelectric effect, threshold frequency and work function energy.
c) Explain why the maximum photoelectric energy is independent of intensity where as photoelectric current is proportional to intensity. d) Describe Einstein’s Photoelectric equation 2 max 2 1 hf = mv .
e) Define and explain de Broglie wavelength and use p h .
f) Understand discrete energy levels of hydrogen atom and spectral lines
g) Use the relation = hf = (E1 -E2 . h) Describe the production of X-rays and main features of X-rays tube. i) Identify use of X-rays. j) Explain Band Theory and its terms valence band, conduction band and forbidden band.