One reason a photon could not create an odd number of electrons ...

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One reason a photon could not create an odd number of electrons and positrons is that such a process would
 
  A)
 
  not conserve charge.
  B)
 
  not conserve energy.
  C)
 
  require photon energies that are not attainable.
  D)
 
  result in the creation of mass.
  E)
 
  result in the destruction of mass.

Question 2

A lens of focal length 20 cm has an object of height 3.0 cm placed 100 cm in front of it. The image formed is
 
  A)
 
  upright and smaller than the object.
  B)
 
  inverted and smaller than the object.
  C)
 
  inverted and larger than the object.
  D)
 
  upright and larger than the object.
  E)
 
  upright and the same size as the object.

[jamesnevil303]

Answer to Question 1

A

Answer to Question 2

B

[fasfsadfdsfa]

Excellent

[dantucker]

Gracias!