A ray of light is incident at an angle of 30o on one top surface of a parallel-sided glass block of refractive index 1.5. The ray finally emerges from the lower surface. What is the angular deviation of the emergent ray?
If the angle of declination in a place is 10oE, calculate the true geographic bearing if the compass reads N40oE
When a transformer has more secondary windings than primary windings, it?
