1) Which colour photons have the most energy? a) red b) green c) yellow d) blue 2) What happens the the intensity peak as temperature rises? a) taller, sharper b) broader, lower c) lower, broader d) taller, wider 3) What happens to the energy emitted if I triple the temperature? a) x27 b) x9 c) x81 d) x3 4) what happens to luminosity if I half the radius? a) x0.5 b) x0.25 c) x4 d) x2 5) what are the units of intensity? a) W b) Wm-2 c) Js-1 d) Js 6) when does fusion of carbon occur in stars? a) main sequence b) white dwarf c) supernova d) red giant 7) whendoes fusion of gold occur? a) supernova b) red super giants c) black holes d) neutron stars 8) what stops further collapse in a small star a) neutron degeneracy pressure b) electron degeneracy pressure c) radiation pressure d) electrostatic repulsion

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