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The graph below shows the variation of image distance (v) with the object distance (u) when an object is kept in front of a lens.
A resistance R is connected across a cell with a switch and a rheostat in series. A voltmeter is connected parallel across the cell. Current in the circuit is increased using the rheostat.
Define natural vibrations.
How is this vibration different from damped vibrations in terms of their amplitudes?
A metal piece of thermal capacity 40 JK⁻¹, absorbs 800 J of heat. Calculate the rise in the temperature of this metal piece.
In an AC generator, name the part which has the following functions:
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