A jeweler wants to authenticate if a stone brought in by a client is a real diamond. He shines a laser at the diamond with an incident angle of 42 3º. A table listing the indices of refraction in the Snell's Law Phet What should the angle of refraction be?

adding a(n) to an electric circuit would increase the magnetic field around a wire;

b. solenoid

a solenoid is a type of electromagnet whose purpose is to generate a controlled magnetic field.

if the purpose of the solenoid is instead to impede changes in the electric current, a solenoid can be more specifically classified as an inductor rather than an electromagnet.

the answer is a. hope this .