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# Suggested Questions for the Practical Examination

Physics Practical Experiment: Suggested Questions for the Practical Examination

SUGGESTED QUESTIONS FOR THE PRACTICAL EXAMINATION

Â·        Determine the resistance of a given wire using metre bridge. Also find the radius of the wire using screw gauge and hence determine the specific resistance of the material of the wire. Take at least 4 readings.

Â·        Determine the value of the horizontal component of the Earthâ€™s magnetic field, using tangent galvanometer. Take at least 4 readings.

Â·        Determine the value of the horizontal component of the Earthâ€™s magnetic field using the magnetic field produced along the axial line of the carrying-current circular coil. Take at least 2 readings.

Â·        Using the spectrometer, measure the angle of the given prism and angle of minimum deviation. Hence calculate the refractive index of the material of the prism.

Â·        Adjust the grating for normal incidence using the spectrometer. Determine the wavelength of green, blue, yellow and red lines of mercury spectrum (The number of lines per metre length of the grating can be noted from the grating).

Â·        Draw the V-I characteristics of PN junction diode and determine its forward resistance and knee voltage from forward characteristics.

Â·        Draw the V-I characteristics of Zener diode and determine its forward resistance and knee voltage from forward characteristics. Also find break down voltage of the Zener diode from reverse characteristics.

Â·        Draw the input and transfer characteristic curves of the given NPN junction transistor in

Â·        CE mode. Find the input impedance from input characteristics and current gain from transfer characteristics.

Â·        Draw the output and transfer characteristic curves of the given NPN junction transistor in CE mode. Find the output impedance from output characteristics and current gain from transfer characteristics.

Â·        Verify the truth table of logic gates AND, NOT, Ex-OR and NOR gates using integrated circuits.

Â·        Verify the truth table of logic gates OR, NOT, Ex-OR and NOR gates using integrated circuits.

Â·        Verify De Morganâ€™s first and second theorems.

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