After three half lifes, the fraction of a radioactive material that has decayed is
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1992
The diagram above shows a meter bridge in which two of thee arms contain resistances R and 2Ω. A balance point is obtained at 60cm from the left end , calculate the value of R
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1992
The diagram above represents the field pattern obtained by bringing the poles of two magnets together.The poles must be
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1992
The figure above shows the heights of two liquids X and Y when some air is sucked out of the apparatus through the pump P. The diameter of the table in X is twice That of the Tube In Y. What is the relative density of th…
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1992
In the diagram above, the hanging mass m2 is adjusted until m1 is on the verge of sliding. The coefficient of static friction between the mass m1 and the table is
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1992
A uniform light rod is kept in horizontal equilibrium under the influence of fore forces as shown above, which of the following equations correctly represents the condition of equilibrium for the rod
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1992
PQRS is rectangular cell with PQ perpendicular to the magnetic field as shown above. If a current flows in the the direction PQRS in what direction will the coil move
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1992
A capacitor of 10µF is connected across a cell of 12 volts as shown above, calculate the energy stored in the capacitor
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1992
The circuit diagram above contains four ammeters W, X, Y and Z, Which of the following statements about the ammeter readings is correct