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CBSE Physics Practical Syllabus for Class 12 Session 2017-18
(Total Periods 60)
The record to be submitted by the students at the time of their annual examination has to include:
– Record of at least 15 Experiments [with a minimum of 6 from each section], to be performed by the
– Record of at least 5 Activities [with a minimum of 2 each from section A and section B], to be
demonstrated by the teachers.
– The Report of the project to be carried out by the students.
1. To determine resistance per cm of a given wire by plotting a graph for potential difference versus
2. To find resistance of a given wire using metre bridge and hence determine the resistivity (specific
resistance) of its material.
3. To verify the laws of combination (series) of resistances using a metre bridge.
4. To verify the laws of combination (parallel) of resistances using a metre bridge.
5. To compare the EMF of two given primary cells using potentiometer.
6. To determine the internal resistance of given primary cell using a potentiometer.
7. To determine resistance of a galvanometer by half-deflection method and to find its figure of merit.
8. To convert the given galvanometer (of known resistance and figure of merit) into a voltmeter of desired
range and to verify the same.
9. To convert the given galvanometer (of known resistance and figure of merit) into an ammeter of desired
range and to verify the same.
10. To find the frequency of AC mains with a sonometer.
(For the purpose of demonstration only)
1. To measure the resistance and impedance of an inductor with or without iron core.
2. To measure resistance, voltage (AC/DC), current (AC) and check continuity of a given circuit using
3. To assemble a household circuit comprising three bulbs, three (on/off) switches, a fuse and a power
4. To assemble the components of a given electrical circuit.
5. To study the variation in potential drop with length of a wire for a steady current.
6. To draw the diagram of a given open circuit comprising at least a battery, resistor/rheostat, key,
ammeter and voltmeter. Mark the components that are not connected in proper order and correct the
circuit and also the circuit diagram.
1. To find the value of v for different values of u in case of a concave mirror and to find the focal length.
2. To find the focal length of a convex mirror, using a convex lens.
3. To find the focal length of a convex lens by plotting graphs between u and v or between 1/u and 1/v.
4. To find the focal length of a concave lens, using a convex lens.
5. To determine angle of minimum deviation for a given prism by plotting a graph between angle of
incidence and angle of deviation.
6. To determine refractive index of a glass slab using a travelling microscope.
7. To find refractive index of a liquid by using convex lens and plane mirror.
8. To draw the I-V characteristic curve for a p-n junction in forward bias and reverse bias.
9. To draw the characteristic curve of a zener diode and to determine its reverse break down voltage.
10. To study the characteristic of a common – emitter npn or pnp transistor and to find out the values of
current and voltage gains.
(For the purpose of demonstration only)
1. To identify a diode, an LED, a transistor, an IC, a resistor and a capacitor from a mixed collection of
2. Use of multimeter to (i) identify base of transistor, (ii) distinguish between npn and pnp type transistors,
(iii) see the unidirectional flow of current in case of a diode and an LED, (iv) check whether a given
electronic component (e.g., diode, transistor or IC) is in working order.
3. To study effect of intensity of light (by varying distance of the source) on an LDR.
4. To observe refraction and lateral deviation of a beam of light incident obliquely on a glass slab.
5. To observe polarization of light using two Polaroids.
6. To observe diffraction of light due to a thin slit.
7. To study the nature and size of the image formed by a (i) convex lens, (ii) concave mirror, on a screen
by using a candle and a screen (for different distances of the candle from the lens/mirror).
8. To obtain a lens combination with the specified focal length by using two lenses from the given set of
Suggested Investigatory Projects
1. To study various factors on which the internal resistance/EMF of a cell depends.
2. 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
(b) the distance of a incandescent lamp (of fixed power) used to ‘illuminate’ the LDR.
3. To find the refractive indices of (a) water (b) oil (transparent) using a plane mirror, an equi convex lens
(made from a glass of known refractive index) and an adjustable object needle.
4. To design an appropriate logic gate combination for a given truth table.
5. 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.
6. 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.
7. 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.
8. To set up a common base transistor circuit and to study its input and output characteristic and to
calculate its current gain.
9. 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.
10. To construct a switch using a transistor and to draw the graph between the input and output voltage and
mark the cut-off, saturation and active regions.
11. To study the earth’s magnetic field using a tangent galvanometer.
Practical Examination for Visually Impaired Students
Time Allowed: Two hours Max. Marks: 30
|Identification/Familiarity with the apparatus||5 Marks|
|Written test (based on given/prescribed practicals)||10 Marks|
|Practical Record||5 Marks|
The practical examination will be of two hour duration.
A separate list of ten experiments is included here.
The written examination in practicals for these students will be conducted at the time of practical
examination of all other students.
The written test will be of 30 minutes duration.
The question paper given to the students should be legibly typed. It should contain a total of 15
practical skill based very short answer type questions. A student would be required to answer any 10
A writer may be allowed to such students as per CBSE examination rules.
All questions included in the question papers should be related to the listed practicals. Every question
should require about two minutes to be answered.
These students are also required to maintain a practical file. A student is expected to record at least
five of the listed experiments as per the specific instructions for each subject. These practicals should
be duly checked and signed by the internal examiner.
The format of writing any experiment in the practical file should include aim, apparatus required,
simple theory, procedure, related practical skills, precautions etc.
Questions may be generated jointly by the external/internal examiners and used for assessment.
The viva questions may include questions based on basic theory/principle/concept, apparatus/
materials/chemicals required, procedure, precautions, sources of error etc.
A. Items for Identification/ familiarity with the apparatus for assessment in practicals (All experiments)
Meter scale, general shape of the voltmeter/ammeter, battery/power supply, connecting wires,
standard resistances, connecting wires, voltmeter/ammeter, meter bridge, screw gauge, jockey
Galvanometer, Resistance Box, standard Resistance, connecting wires, Potentiometer, jockey,
Galvanometer, Lechlanche cell, Daniell cell [simple distinction between the two vis-à-vis their outer
(glass and copper) containers], rheostat connecting wires, Galvanometer, resistance box, Plug-in and
tapping keys, connecting wires battery/power supply, Diode, Transistor, IC, Resistor (Wire-wound or
carbon ones with two wires connected to two ends), capacitors (one or two types), Inductors, Simple
electric/electronic bell, battery/power supply, Plug-in and tapping keys, Convex lens, concave lens,
convex mirror, concave mirror, Core/hollow wooden cylinder, insulated wire, ferromagnetic rod,
Transformer core, insulated wire.
B. List of Practicals
1. To determine the resistance per cm of a given wire by plotting a graph between voltage and
2. To verify the laws of combination (series/parallel combination) of resistances by Ohm’s law.
3. To find the resistance of a given wire using a meter bridge and hence determine the specific
resistance (resistivity) of its material.
4. To compare the e.m.f of two given primary cells using a potentiometer.
5. To determine the resistance of a galvanometer by half deflection method.
6. To identify a
(i) diode, transistor and IC
(ii) resistor, capacitor and inductor, from a mixed collection of such items.
7. To understand the principle of (i) a NOT gate (ii) an OR gate (iii)an AND gate and to make their
equivalent circuits using a bell and cells/battery and keys /switches.
8. To observe the difference between
(i) a convex lens and a concave lens
(ii) a convex mirror and a concave mirror and to estimate the likely difference between the power
of two given convex /concave lenses.
9. To design an inductor coil and to know the effect of
(i) change in the number of turns
(ii) introduction of ferromagnetic material as its core material on the inductance of the coil.
10. To design a (i) step up (ii) step down transformer on a given core and know the relation between its
input and output voltages.
Note: The above practicals may be carried out in an experiential manner rather than recording observations.
3. Laboratory Manual of Physics for class XII Published by NCERT.
4. The list of other related books and manuals brought out by NCERT (consider multimedia also).