SAINIK SCHOOL GOPALGANJSummer Vacation Home Work

Subject – PhysicsClass – XII

Investigatory Projects- Physics (2015-16)As per C.B.S.E. guidelines, all students have to prepare one Investigatory Project carrying 3 marks. All students are therefore, advised to prepare one Investigatory Project on any one of the following topics or any other topic of their choice based on concept of physics after consulting the teacher during the summer vacation.

POINTERS FOR MAKING PROJECT REPORTThe material should be placed and bound in the following order: 1. Top Sheet of transparent plastic –The top page of your report should carry the following information in printed form or handwritten in neat block letters:

Title of Project: Name of Student: Roll Number: Date of submission:

2. Aim of Project3. Apparatus required4. Principle/theory 5. construction with labeled diagram, 6. Working7. Observations 8. calculations, 9. Result/ Conclusions10. Applications, 11. Graphs if any,12. References/bibliography13. Back cover of plastic: may be opaque or transparent

List of Investigatory Projects1. To study and construct Van de Graff generator2. To study and construct A.C.Generator/ Motor3. To study and construct Transformer4. To study and show Diffraction of light5. 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.6. Use of semiconductor devices (transistor) as amplifier, oscillator, fire alarm, rain alarm, etc.7. To study and construct one way or two way intercom8. To study Faraday law of EMI (self & mutual induction)9. To study and construct Power/magnetic brake 10. To study and construct Thermo couple

AKS, HKS, Cl. XII Physics Topic: Winter HHW Session: 2015-16 Page 1

11. To study various factors on which the internal resistance/emf of a cell depends.12. To study the variations, in current flowing, in a circuit containing a LDR, because of a variation. (a) in the power of the incandescent lamp, used to 'illuminate' the LDR. (Keeping all the lamps at a fixed distance). (b) in the distance of a incandescent lamp (of fixed power) used to 'illuminate' the LDR.13. To find the refractive indices of (a) water (b) oil (transparent) using a plane

mirror, a equiconvex lens, (made from a glass of known refractive index) and an adjustable object needle.14. To design an appropriate logic gate combination for a given truth table.15. 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.16. To estimate the charge induced on each one of the two identical styro foam (or pith) balls suspended in a vertical plane by making use of Coulomb's law.17. To set up a common base transistor circuit and to study its input and output

characteristic and to calculate its current gain.18. 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.19. 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.20. To study the earth's magnetic field using a tangent galvanometer.

PHYSICS HOLIDAY HOME WORKCLASS XI

Project Materials Required :

One Project file , Text Book, Writing & Drawing Materials, Internet & Library support, Covering Material, Reference Books, Newsprints , Photographs, Graphs, where applicable.

Instructions / Guidelines :

AKS, HKS, Cl. XII Physics Topic: Winter HHW Session: 2015-16 Page 2

You are required to prepare a technical report formally written, including an abstract, some theoretical discussion, experimental set up, observation and data collected, analysis and discussion of the result, conclusion e.t.c The project can be a theoretical one as well on any of the topic related to physics.

You can work on any topic of your choice from the list given below:

1) Role of physics in technology 2) Application of vectors and scalar quantities and its significance. 3) Rocket propulsion and application of Newton’s ‘Law 4) Simple Harmonic motion 5) Center of mass M .I rand related topic.6) Friction advantages, disadvantages in day to day life its law and application. 7) Bernoulli’s principle and its application. 8) Pascal law. 9) Thermal radiation. 10) Carnot’s cycle. 11) Simple Machines. 12) Resonance. 13) Thermodynamics 14) Physics related with other Sciences. 15) Uniform circular motion, Rigid body dynamics

AKS, HKS, Cl. XII Physics Topic: Winter HHW Session: 2015-16 Page 3