- To study various factors on which the internal resistance/EMF of a cell depends.
- To study the variations in current flowing in a circuit containing an LDR because of a variation in
- (a) the power of the incandescent lamp, used to ‘illuminate’ the LDR (keeping all the lamps at a fixed distance).
- (b) the distance of a incandescent lamp (of fixed power) used to ‘illuminate’ the LDR.
- To find the refractive indices of (a) water (b) oil (transparent) using a plane mirror, an equiconvex lens (made from a glass of known refractive index) and an adjustable object needle.
- To investigate the relation between the ratio of (i) output and input voltage and (ii) number of turns in the secondary coil and primary coil of a self-designed transformer.
- To investigate the dependence of the angle of deviation on the angle of incidence using a hollow prism filled one by one, with different transparent fluids.
- To estimate the charge induced on each one of the two identical Styrofoam (or pith)
balls suspended in a vertical plane by making use of Coulomb’s law.
- To study the factor on which the self-inductance of a coil depends by observing the
effect of this coil, when put in series with a resistor/(bulb) in a circuit fed up by an
A.C. source of adjustable frequency.
- To study the earth’s magnetic field using a compass needle -bar magnet by plotting
magnetic field lines and tangent galvanometer.
For Physics Practical Copy of Class 12, click here
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