Q1. Find out (a) capacitance and (b) maximum voltage that can be applied to a Teflon-filled parallel- plate capacitor having a plate area of 175 cm2 and an insulation thickness of 0.040 mm.
Q2. Coherent light with wavelength 603 nm passes through two very narrow slits, and the interference pattern is observed on a screen the distance of 2.00 m from the slits. The first-order bright fringe is the distance of 4.84mm from the center of the central bright fringe. For what wavelength of light will first-order dark fringe be observed at this same point on the screen?