SYJC Physics Practicals - Identification of Equipment in Physics Lab

Identification of Equipment in Physics Lab

Copper Calorimeter	Mercury Thermometer	Glass Beaker
Travelling Microscope	Sonometer	Tuning Fork
Pendulum Bob	Vernier Calliper (Click to see larger image)	Crocodile Clips
Carbon Resistor	Semiconductor Diode	Transistor
Integrated Circuit (IC)	Light Emitting Diode (LED)	Capacitor
Potentiometer	Ammeter	Voltmeter
Boss head	Capillary Tube	Galvanometer
Plug Key	Resistance Box	Resistance Coil
Rheostat	Four way key	Daniel Cell
Leclanche Cell	Multimeter	Power Supply  (Use the Red and Green Terminals only)
Circuit Symbol Capacitor	Circuit Symbol Light Emitting Diode (LED)	Circuit Symbol Resistance
Circuit Symbol NPN Transistor	Circuit Symbol PN Junction Diode	Jockey

SYJC Physics Practicals - Main Experiments

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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SYJC Physics Practical - Activities

THIS IS A SUGGESTED LIST OF ACTIVITIES. STUDENTS SHOULD NOTE THAT THERE MAY BE VARIATIONS IN THE ACTUAL PRACTICAL SLIP.

EFFECT OF DETERGENT ON SURFACE TENSION

1. Measure the rise of water in a capillary tube, using travelling microscope.

2. Measure the rise of detergent solution in the same capillary tube.

3. Compare the heights in both cases.

4. State your conclusion from the results.

Given: Least Count of travelling microscope  = 0.001 cm

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USE OF MULTIMETER

You are given a set of electronic components. For each component:

1. Draw the circuit symbol of each component.

2. Find the value of the resistor from its color code.

3. Measure the resistance by using a multimeter. 

4. Check whether the LED and pn-junction diode are in working condition.

5. Identify the base of the transistor.

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SIMPLE PENDULUM

1. Keep the length of the string as 150 cm.

2. Find the time taken for 10 oscillations. Hence find the time period.

3. Calculate the time (t) and measure the amplitude (A) for 5, 10, 15, 20 and 25 oscillations.

4. Plot a graph of A2 against time (t).

5. State your conclusion.

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EFFECT OF CROSS-SECTIONAL AREA ON RATE OF LOSS OF HEAT

1. Find the least count of the thermometer.

2. Find the least count of the stop watch.

3. For the small calorimeter, note the temperature of water at interval of 1 min. Take 10 readings.

4. For the big calorimeter, note the temperature of water at interval of 1 min. Take 10 readings.

5. Plot graphs of temperature against time on the same graph paper.

6. State your conclusion.

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EFFECT OF LOAD ON DEPRESSION AT THE CENTRE

1. Arrange the apparatus for the above activity.

2. Find the initial reading on vertical scale without loading.

3. For four (4) different loads note down the vertical scale reading while loading and unloading.

4. Plot a graph of mean depression against load.

5. State your conclusion from the graph.

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EFFECT OF LOAD ON DEPRESSION OF METRE SCALE CLAMPED AT ITS END

1. Arrange the apparatus for the above activity.

2. Find the initial reading on vertical scale without loading.

3. For four (4) different loads note down the vertical scale reading while loading and unloading.

4. Plot a graph of mean depression against load.

5. State your conclusion from the graph.

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EFFECT OF CROSS-SECTIONAL AREA ON RATE OF LOSS OF HEAT

1. Find the least count of the thermometer.

2. Find the least count of the stop watch.

3. For the small calorimeter, note the temperature of water at interval of 1 min. Take 10 readings.

4. For the big calorimeter, note the temperature of water at interval of 1 min. Take 10 readings.

5. Plot graphs of temperature against time, for both calorimeters, on the same graph paper.

6. State your conclusion.

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SIMPLE PENDULUM

1. Keep the length of the string as 130 cm.

2. Find the time taken for 10 oscillations. Hence find the time period.

3. Calculate the time (t) and measure the amplitude (A) for 5, 10, 15, 20 and 25 oscillations.

4. Plot a graph of A2 against time (t).

5. State your conclusion.

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VARIATION IN POTENTIAL DROP WITH LENGTH OF WIRE 

1. Draw neat circuit diagram for the above activity.

2. Find the least count of the voltmeter.

3. For four (4) different lengths (L) of the potentiometer wire, find the voltmeter reading.

4. In each case, find the ratio of V/L

5. State your conclusion.

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FAULT FINDING & CORRECTION IN ELECTRICAL CIRCUIT 

1. Observe the following circuit diagram carefully.

-------- some circuit will be given here ------

2. Find the faults in the given circuit and state the correction required.

3. Draw the correct circuit diagram.

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IDENTIFICATION OF ELECTRONIC COMPONENTS

You are given a set of electronic components. For each component:

1. Write the name of the component.

2. Draw the circuit symbol.

3. Write the number of terminals for each component and label the terminals.

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USE OF MULTIMETER

You are given a set of electronic components. For each component:

1. Draw the circuit symbol of each component.

2. Find the value of the resistor from its color code.

3. Measure the resistance by using a multimeter. 

4. Check whether the LED and pn-junction diode are in working condition.

5. Identify the type of the transistor. 

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VARIATION IN POTENTIAL DROP WITH LENGTH OF WIRE 

1. Draw neat circuit diagram for the above activity.

2. Find the least count of the voltmeter.

3. For four (4) different lengths (L) of the potentiometer wire, find the voltmeter reading.

4. In each case, find the ratio of V/L

5. State your conclusion.

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