The direction in which the potential changes at the greatest rate ...

[cabate]

The direction in which the potential changes at the greatest rate is in the direction
 
  A)
 
  of the gradient of the potential.
  B)
 
  perpendicular to the electric field.
  C)
 
  perpendicular to the gradient of the potential.
  D)
 
  of the partial derivative with respect to x.
  E)
 
  cannot be determined

Question 2

Using the Rayleigh criterion, one concludes that using fixed wavelength light that it is not possible to resolve details less than about
 
  A)
 
  0.5 wavelength.
  B)
 
  0.1 wavelength.
  C)
 
  one wavelength.
  D)
 
  10 wavelengths.
  E)
 
  122 wavelengths.

[nital]

Answer to Question 1

A

Answer to Question 2

C

[cabate]

Gracias!

Excellent