What principle is responsible for alternating light and dark ...

[dollx]

What principle is responsible for alternating light and dark bands when light passes through two or more narrow slits?
 
  A)
 
  reflection
  B)
 
  refraction
  C)
 
  polarization
  D)
 
  dispersion
  E)
 
  interference

Question 2

Two objects are in all respects identical except for the fact that one was coated with a substance that is an excellent reflector of light while the other was coated with a substance that is a perfect absorber of light.
 
  You place both objects at the same distance from a powerful light source so they both receive the same amount of energy U from the light. The linear momentum these objects will receive is such that: A)
 
  The reflecting objects receives a larger amount of momentum.
  B)
 
  Both objects receive the same amount of momentum.
  C)
 
  The reflecting object receives a smaller amount of momentum.
  D)
 
  None of the previous answers is correct.

[raili21]

Answer to Question 1

E

Answer to Question 2

A

[dollx]

Thanks for the timely response, appreciate it

[Joy Chen]

Wow, this really help