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Q1. The thin circular coil has radius r = 10 cm and contains N = 3 turns of resistive wire. The coil has a resistance of 0.5ohms. A small compass is placed at the center of the coil. With the battery disconnected the compass needle points to the right, in the plane of the coil. The apparatus is located near equator, where the Earth's magnetic field B Earth is horizontal, with a magnitude of 4×10-5 tesla. (Presume that B Earth is pointing to the right.)

Q2. A ray of light strikes a flat, 2.00 cm thick block of glass (n = 1.75) at an angle of θ = 22.4° with respect to normal. Find out the lateral distance d by which light beam is shifted.

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