Physics
Which of the following pairs of physical quantities have the same dimensions?

Work and Energy
Momentum and Power
Force and Power
Work and Power

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Physics
In a bipolar junction transistor

All the three regions (the emitter, the base and the collector) have equal concentrations of impurity
The collector has the least concentration of impurity
The emitter has the least concentration of impurity
The base has the least concentration of impurity

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Physics
Dynamo is a device for converting

Mechanical energy into electrical energy
Chemical energy into electrical energy
Magnetic energy into electrical energy
Heat energy into electrical energy

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