1. In an LCR series circuit with XL > XC, the phase angle between the current and voltage phasors is 30. If the AC frequency doubles, what is the magnitude of the resulting phase angle in relation to the original phase angle? You need to prove your answer by stating relevant equations and logical deductions.8. A ray of light is incident on the mid-point of a glass prism surface at an angle of 23.40 with the normal. For the glass, n = 1.60, and the prism apex angle is 51.80. What is the angle of incidence at the glass-to-air surface on the side opposite where the ray exits the prism?1e slit produces an Interference pattern Occurs at an angle of 63.4, at what angk