Practicals
Class XI
The record, to be submitted by the students, at the time of their annual examination, has to include
Scheme
(l)Record of at least 15 Experiments [with a minimum of 8 from section A and 7 from section B], to be performed by the students.
(2) Record of at least 5 Activities [with a minimum of 2 each from section A and section B], to be performed by the students.
(3) Report of at least two demonstration experiments, to be carried out by the teacher.
Evaluation Scheme
Two experiments one from each section 8+8 Marks
Practical record (experiment & activities) 6 Marks
Record of Demonstration experiments 2 Marks
Viva on experiments & activities 6 Marks
Total 30 Marks
SECTION A
Experiments (Any 8 experiments out of the following to be performed by the Students)
1. To measure diameter of a small spherical/cylindrical body using Vernier Callipers.
2. To measure internal diameter and depth of a given beaker/calorimeter using Vernier Callipers and hence find its volume.
3. To measure diameter of a given wire using screw gauge.
4. To measure thickness of a given sheet using screw gauge.
5. To determine volume of an irregular lamina using screw gauge.
6. To determine radius of curvature of a given spherical surface by a spherometer.
7. To determine the mass of two different objects using a beam balance.
8. To find the weight of a given body using parallelogram law of vectors.
9. Using a simple pendulum, plot L-T and L-T2 graphs. Hence find the effective length of second's pendulum using appropriate graph.
10. To study the relationship betwen force of limiting friction and normal reaction and to find the co-efficient of friction between a block and a horizontal surface.
11. To find the downward force, along an inclined plane, acting on a roller due to gravitational pull of the earth and study its relationship with the angle of inclination (.) by plotting graph between force and sin..
SECTION B
Experiments (Any 7 experiments out of the following to be performed by the students)
1. To determine Young’s modulus of elasticity of the material of a given wire.
2. To find the force constant of a helical spring by plotting a graph between load and extension.
3. To study the variation in volume with pressure for a sample of air at constant temperature by plotting graphs between P and V, and between P and 1/V
4. To determine the surface tension of water by capillary rise method.
5. To determine the coefficient of viscosity of a given viscous liquid by measuring terminal velocity of a given spherical body.
6. To study the relationship between the temperature of a hot body and time by plotting a cooling curve.
7. To determine specific heat capacity of a given (i) solid (ii) liquid, by method of mixtures.
8. (i) To study the relation between frequency and length of a given wire under constant tension using sonometer.
(ii) To study the relation between the length of a given wire and tension for constant frequency using sonometer.
9. To find the speed of sound in air at room temperature using a resonance tube by two resonance positions.
1. Physics Part-I, Textbook for Class XI, Published by NCERT
2 . Physics Part-II, Textbook for Class XI, Published by NCERT
Practicals
Class XII
Scheme
(l) Record of at least 15 Experiments [with a minimum of 7 from section A and 8 from section B], to be performed by the students.
(2) Record of at least 6 Activities [with a minimum of 3 each from section A and section B], to be demonstrated by the teachers.
(3) The Report of the project, to be carried out by the students.
Evaluation Scheme
Two experiments one from each section 8+8 Marks
Practical record [experiments & activities] 6 Marks
Project 3 Marks
Viva on experiments & project 5 Marks
Total 30 Marks
SECTION A
Experiments (Any 7 experiments out of the following to be performed by the students)
1. To determine resistance per cm of a given wire by plotting a graph of potential difference versus current.
2. To find resistance of a given wire using metre bridge and hence determine the resistively (specific resistance) of its material
3. To verify the laws of combination (series/parallel) of resistances using a metre bridge.
4. To compare the emf of two given primary cells using potentiometer.
5. To determine the internal resistance of given primary cell using potentiometer.
6. To determine resistance of a galvanometer by half-deflection method and to find its figure of merit.
7. To convert the given galvanometer (of known resistance and figure of merit) into an ammeter and voltmeter of desired range and to verify the same.
8. To find the frequency of the a.c. mains with a sonometer.
SECTION B
Experiments (Any 8 experiments out of the following to be performed by the students)
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 (i) concave mirror, (ii) convex lens and plane mirror.
8. To draw the I-V characteristic curve of 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.
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