The center of the Earth is made of A) solid iron and nickel ...

[ishan]

The center of the Earth is made of
 
  A) solid iron and nickel
  B) liquid iron and nickel
  C) liquid rock
  D) solid rock

Question 2

In single-slit diffraction
 
  A) the central maximum is about as wide as the other maxima.
  B) the central maximum is much narrower than the other maxima.
  C) the central maximum is about twice as wide as the other maxima.
  D) the intensities of successive maxima are roughly the same, falling off only gradually as one goes away from the central maximum.
  E) the slit width must be less than one wavelength for a diffraction pattern to be apparent.

[EAN94]

Answer to Question 1

A

Answer to Question 2

C

[ishan]

Excellent

[debra928]

TYSM