Christie bought a 9 x 50 pair of binoculars for stellar ...

[anshika]

Christie bought a 9 x 50 pair of binoculars for stellar observing. The 9 is the
 
  A) f/number.
  B) aperture in cm.
  C) angular magnification.
  D) aperture in mm.
  E) f/number-1

Question 2

The output voltage of a power supply is V = Vo sin (120. t) volts. At t = 0.010 s the output voltage is 4.2 V. What is the rms voltage of the generator?
 
  What will be an ideal response?

[hramirez205]

Answer to Question 1

C

Answer to Question 2

3.19 V

[anshika]

Excellent

[Joy Chen]

Thanks for the timely response, appreciate it