Please note that this is only an indicative list of practicals. There may be changes in the practical exam.
L 2 : SPRING MASS OSCILLATOR - I
• Attach a weight hanger at the lower end of the spring suspended vertically from a rigid support. Add a mass (M0 = 200 gm) in the hanger. Take the position of the pointer(x0) as zero.
• Repeat for three more masses which are less than M0 and three more masses which are less than M0. Note the position of the pointer for six (6) values of M. Find the extension (x) in each case.
• Plot a graph of Mg against x. Hence determine the mass of the spring.
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L3: SONOMETER - II
• A tuning fork of known frequency is given to you. Using the sonometer, determine the length of the wire (L) vibrating in unison with the given tuning fork for four (4) different known tensions (T) and one unknown tension.
• Plot the graph of L2 against T.
• Hence determine the unknown tension.
• Also draw the conclusion from the graph.
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L 4: WHEATSTONE’S BRIDGE
• Determine the resistance of the given wire using Wheatstone’s metre bridge.
• Take three (3) independent sets of readings.
• Hence determine the specific resistance of the material of the given wire.
Given:
a) Length of the wire = ________ cm
b) Radius of wire = ________ cm
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L 5: RESONANCE TUBE - I
• You are given four (4) tuning forks of known frequencies and one of unknown frequency. Determine the correct length (L) of air column vibrating in unison with each tuning fork.
• Plot a graph of reciprocal of correct length of air column (1/L) against frequency (n) of the tuning fork.
• Hence find the unknown frequency of the tuning fork.
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L 6: POTENTIOMETER
• Compare the emf of two given cells using a potentiometer by connecting them separately.
• Take five sets of observations.
• Hence determine the emf of cell E1.
• Given: EMF of cell E2 = 1.08 volt
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L 7: PN JUNCTION DIODE
• Draw the characteristic curve of the pn junction diode when it is in forward bias mode.
• Hence calculate the d.c. resistance in the forward bias mode.
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L 8 : SPRING MASS OSCILLATOR - II
• Attach a weight hanger at the lower end of the spring suspended vertically from a rigid support.
• Set the system considering suitable mass in the weight hangar and determine the time taken to complete 10 oscillations.
• Vary the mass in the weight hangar and find the time of oscillations for five (5) different values of mass (M).
• Find the periodic time for each mass.
• Plot a graph of T2 against M.
• Hence determine the force constant of the spring.
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L 9: WHEATSTONE’S BRIDGE
• Verify the law of resistance in series combination using Wheatstone’s metre bridge.
• Take three independent readings.
Given:
a) Resistance of first wire (R1) = ________ ohm
b) Resistance of second wire (R2) = ________ ohm
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L 10: SURFACE TENSION
Determine the radius of bore of the capillary tube by measuring the height of water in the capillary tube.
Given:
Surface Tension of water (T) = 72 dyne/cm
Density of water (?) = 1 gm/cm3
Angle of contact (?) = 0 DEGREES
Acceleration due to gravity (g) = 980 cm/s2
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L 11: RESONANCE TUBE
• A set of five (5) tuning forks of known frequencies is given to you. Find the correct length of air column vibrating in unison with each tuning fork.
• Hence determine the velocity of sound in air at room temperature.
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L 12: NEWTON’S LAW OF COOLING
Plot the cooling curve for a given hot liquid and find the slope (d?/dt) at five different temperatures (?).
Measure the room temperature ?0
Plot a graph of (d?/dt) against (?- ?0 )
Hence verify Newton’s Law of Cooling.
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L13: POTENTIOMETER
• Compare the EMF of two given cells using potentiometer, by the Sum-and-Difference method.
• Take four sets of observations.
• Hence determine the EMF of cell E2.
• Given: EMF of cell E1 = 1.5 volt
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L14: RESISTANCE OF A GALVANOMETER
• Determine the resistance of the given galvanometer by Kelvin’s method.
• Take three (3) independent readings.
• Repeat the experiment by interchanging the position of the galvanometer and the resistance box.
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L 15: WHEATSTONE’S BRIDGE
• Verify the law of resistance in parallel combination using Wheatstone’s metre bridge.
• Take three independent readings.
Given:
a) Resistance of first wire (R1) = ________ ohm
b) Resistance of second wire (R2) = ________ ohm
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L16: INTERNAL RESISTANCE OF A CELL
• Determine the internal resistance of the given cell by using potentiometer.
• Take four (4) sets of observations.
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