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A coil of inductance 100 mH and resistance 800Ω is connected in parallel with a variable capacitor across a 12V, 5kHz supply.
Determine for the condition when the supply current is a minimum:
(a) the capacitance of the capacitor,
(b) the dynamic resistance,
(c) the supply current, and
(d) the Q-factor.
An object is placed at a distance of 0.12m from a convex lens forms an image at a distance of 0.18m. Determine the magnification produced.
Write down the expression for deviation produced by a thin prism also describe dispersive power.
The average distance of an electron in an atom from its nucleus is of the order of: (1) 10 6 m (2) 10 -6 m (3) 10 -10 m (4)10 -15 m Ans: (3) 10 -10 m
Illustrates term refractive index in optical fibres? Refractive Index: Optical fibres consist of two layers which are core and cladding with various refractive indices. T
How noisy is an illuminator? It is very noisy, slightly so or completely silent, depending upon the power source and the construction. There heat dissipation is something which
For which of the following does the centre of mass lie outside the body 1. A pencil 2. A shotput 3. A dice 4. A bangle Solution) 4. bangle ; centre of mass of hollow objects
Two boys A and B are at two diametrically opposite points on a circle. At one instant the two start running on the circle; A anticlockwise with constant speed v and B clockwise wit
Plastics are (A) Good conductors of heat. (B) Good conductors of electricity. (C) Bad conductors of electricity. (D) High density. Ans: Plastics are Bad
Evaluate simple harmonic motion A simple pendulum is 2.00 m long. (a) What is the period of simple harmonic motion for this pendulum if it is hanging in an elevator acceler
Briefly explain resonance? Write down the condition of resonance for weak damping?
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