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Physics-

General

Easy

Question

A condenser of capacity 16mF charged to a potential of 20V is connected to a condenser of capacity c charged to a potential of 10V as shown in the figure. If the common potential is 14V, the capacity C is equal to

18mF
24mF
8mF
4mF

The correct answer is: 4mF

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The effective capacitance in $mu F$ in between A and B will be

The effective capacitance in $mu F$ in between A and B will be

Physics-General

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The equation of a hyperbola, whose foci are (5, 0) and (–5, 0) and the length of whose conjugate axis is 8, is

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parallel

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Chemistry-General

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Chemistry-General

parallel

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Chemistry-General

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The fuel charges for running a train are proportional to the square of the speed generated in km per hour, and the cost is Rs. 48 at 16 km per hour. If the fixed charges amount to Rs. 300 per hour, the most economical speed is

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parallel

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