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Worksheetsquarks w xavier
Total questions: 11
Worksheet time: 11mins
Often seen with the up quark, its partner in the "first generation of matter", the down quark is slightly heavier and just as fun. In terms of e (the charge of a proton), what is the electric charge of a down quark?
+2/3 e
-e
+e
-1/3 e
Which of these is not a meson?
π+
π-
ϒ
p+
The photoelectric effect only occurs if the light shining on the metal is:
coherent.
above a minimum intensity.
above a minimum frequency.
above a minimum wavelength.
Light of a single wavelength is incident on a metal. Electrons are released. The intensity of the light is then increased.
Which of the following changes occur?
Number of electrons released: increase.
Energy of electrons: increase.
Number of electrons released: decrease.
Energy of electrons: no change.
Number of electrons released: decrease.
Energy of electrons: increase.
Number of electrons released: increase.
Energy of electrons: no change.
