SHANTI GYAN NIKETAN SR. SEC. PUBLIC SCHOOL
HOLIDAY HOMEWORK
CLASS: XII SESSION: - 2026-27
SCIENCE STREAM (MEDICAL &NON MEDICAL)
SUBJECT: ENGLISH
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Kindly check the English Summer Holiday HW as CBSE Project uploaded in all what’s app groups of Class Xll.
SUBJECT: PHYSICS
1. Complete activity file as per instructions given in class.
2. Complete practical file as per instruction given in class.
3. Make an investigatory project according to your respective group or individually.
SUGGESTED INVESTIGATORY PROJECTS (CLASS XII)
1. To find resistance of different materials using Ohm’s law.
2. To study the variation in resistance of materials by varying the temperature condition.
3. To find refractive index of different liquids using hollow prism.
4. To verify the laws of series/parallel combination of resistance using dough.
5. To study the factors on which magnetic field strength of a magnetic material depends.
6. To study the diffraction pattern by varying different factors like aperture width, distance between slit and screen etc.
7. To show the motion of charged particles in the presence of mutually perpendicular uniform magnetic and electric field.
8. To design a telescope and study the variation in magnifying power by varying different factors.
9. To find resistivity of different materials like cu, al etc by using Metre Bridge.
10. To estimate the nature of force between different charged bodies using tennis/pith balls.
11. To design gold leaf electroscope and compare the degree of charge between different charged bodies.
12. To investigate the relation between the ratio of input and output voltage based on number of turns in transformer.
13. To study various factors like temperature/concentration/area etc on which the internal resistance /EMF of a cell depends.
14. To study the factor on which the self inductance of a coil depends.
15. 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.
16. To design an appropriate logic gate combination for a given truth table.
17. To find the refractive indices of (a) water (b) oil using a plane mirror, an equi convex lens and an adjustable needle.
18. To investigate the electric field on equatorial line of electric dipole using ballons.
RAY OPTICS & OPTICAL INSTRUMENTS
Q1. A convex lens of focal length 20 cm is placed in contact with a concave lens of focal length 30 cm. An object is placed 60 cm from the combination. Find:
(a) Equivalent focal length
(b) Position of final image
(c) Magnification
Q2.A glass slab of refractive index 1.5 and thickness 6 cm is placed over a printed page. Calculate the apparent shift produced.
Q3.A prism of refracting angle 60° has refractive index √2. Calculate:
(a) Angle of minimum deviation
(b) Angle of incidence for minimum deviation
Q4. A convex mirror forms an image of magnification +0.25 when an object is placed 24 cm in front of it. Calculate:
(a) Image distance
(b) Radius of curvature of mirror
Q5. A compound microscope has objective focal length 1 cm and eyepiece focal length 5 cm. The tube length is 20 cm. Calculate magnifying power for final image at near point.
Q6. A ray of light passes from water (μ = 1.33) to glass (μ = 1.5). If angle of incidence in water is 45°, calculate angle of refraction.
Q7. An object 2 cm high is placed 15 cm in front of a concave mirror of focal length 10 cm. Find:
(a) Position of image
(b) Height of image
(c) Nature of image
Q8. A convex lens produces a real image twice the size of the object. The image is formed 30 cm from the lens. Find:
(a) Object distance
(b) Focal length of lens
Q9. A person can see clearly up to 80 cm. Find the focal length and power of the lens required to read a book at 25 cm.
Q10. Two thin lenses of powers +5D and –2D are separated by 20 cm. Calculate equivalent power if lenses are in air.
Q11. A ray incident normally on one face of an equilateral prism emerges grazing the opposite face. Find refractive index of prism material.
Q12.A telescope has objective focal length 100 cm and eyepiece focal length 5 cm. Find:
(a) Magnifying power in normal adjustment
(b) Length of telescope
Q13.A spherical surface of radius 20 cm separates air and glass (μ = 1.5). An object is placed 30 cm from the pole in air. Find image position.
Q14.Light travels through a glass slab of thickness 4 cm and refractive index 1.5. If angle of incidence is 60°, calculate lateral displacement.
Q15. A convex lens of focal length 25 cm forms an image on a screen placed 75 cm away. Find possible object distances.
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SECTION B
WAVE OPTICS
Q16. In Young’s double slit experiment, slit separation is 0.3 mm and screen distance is 1.5 m. If wavelength used is 600 nm, calculate fringe width.
Q17. In YDSE, the central fringe is bright. One slit is covered with a thin glass plate of refractive index 1.5 and thickness 3 × 10?6 m. Calculate fringe shift for wavelength 600 nm.
Q18. Monochromatic light of wavelength 500 nm falls on a single slit of width 2 × 10?4 m. Calculate angular width of central maximum.
Q19.In a diffraction experiment, the first minimum is observed at angle 30°. If wavelength is 600 nm, calculate slit width.
Q20. Two coherent sources produce interference fringes of width 0.5 mm. If wavelength is doubled, calculate new fringe width.
Q22.In YDSE, wavelength is 500 nm, slit separation 1 mm, and screen distance 2 m. Find distance of 5th bright fringe from central maxima.
Q23.A plane transmission grating has 5000 lines/cm. Calculate diffraction angle for first order maximum for wavelength 600 nm.
Q24. Light of wavelength 589 nm is incident on a narrow slit producing diffraction. If width of central maximum is 4 mm on a screen 2 m away, find slit width.
Q25. In YDSE, one slit is made twice as wide as the other. Explain the effect on:
(a) Fringe width
(b) Intensity of fringes
(c) Visibility
SUBJECT: CHEMISTRY
1. Investigatory Project
Complete the investigatory project assigned in class.
2. NCERT Exercise
Complete all exercises of Chapter 1 and Chapter 2 from the NCERT textbook.
3. Practical File Work
Write the following experiments in your practical file with aim, materials, procedure, observations, and result:
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Ammonium carbonate
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Lead acetate
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Lead carbonate
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Aluminium sulphate
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Zinc sulphate
SUBJECT: BIOLOGY
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Revise unit I of NCERT book. Write down questions given in NCERT book at the back of the chapter.
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Complete the following experiments in the practical file. Get the details of the file from your subject teacher
Experiments to be completed in practical notebook
(Students should write the following experiment in given sequence only)
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Prepare a temporary mount to observe pollen germination.
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Flowers adapted to pollination by different agencies (wind, insects, birds).
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Identification of stages of gamete development, i.e., T.S. of testis and T.S. of ovary through permanent slides (from grasshopper).
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Meiosis in onion bud cell or grasshopper testis through permanent slides.
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Controlled pollination - emasculation, tagging and bagging.
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T.S. of blastula through permanent slides (Mammalian).
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Prepare a temporary mount of onion root tip to study mitosis.
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Isolate DNA from available plant material (banana/papaya/strawberry).
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Prepared pedigree charts of any one of the genetic traits such as rolling of tongue, blood groups, ear lobes, widow's peak and colour blindness.
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Common disease causing organisms like Ascaris, Entamoeba, Plasmodium, any fungus causing ringworm through permanent slides, models or virtual images or specimens. Comment on symptoms of diseases that they cause.
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Study the plant population density by quadrat method.
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Study the plant population frequency by quadrat method.
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Models specimen showing symbolic association in root modules of leguminous plants, Cuscuta on host, lichens.
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Flash cards models showing examples of homologous and analogous organs.
Things to take care while preparing the file
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Write Aim, Principle, Requirements, Procedure, Result and Precautions on Right Hand Page (Ruled Page) of your file.
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Observation Table, Diagrams, Graph, should be on the Left-Hand Page (Blank Sheet) Each and every diagram should be well labeled and drawn with pencil only.
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SUBJECT: PSYCHOLOGY
SUBJECT: PSYCHOLOGY
Name: ___ Class: XII _ *Movie: *___
1. Character I Studied: ______
Ex: Michael Oher / Forrest Gump / Judy Hopps
2. What problem did the character face? 1-2 lines
3. Which concept from Ch-1 is seen in the character? Tick one
[ ] Intelligence [ ] Emotional Intelligence [ ] Creativity [ ] Aptitude
Scene: _________
4. Which concept from Ch-2 is seen in the character? Tick one
[ ] Self as Subject & Object [ ] Self-Esteem [ ] Personality Trait [ ] Self-Regulation
Explain in 1 line: ________
5. If I were a Psychologist, I will use this method to assess them:
[ ] Self-Report [ ] Projective Test [ ] Behavioural Observation
Reason: _________
6. One thing I learnt about Psychology from this movie:
__________
Submit: On A4 sheet. Marks: 10 | Due: Third day after holidays
SUBJECT: FINE ARTS
1. Make any five composition with minimum with human figures and one animal human figure topics are :
a. Fantasy world
b. Market scene
c. Room interior
d. Children park
e. In the exhibition hall
2. Make one sheet on folk art painting.
3. Make one portrait any one famous Indian Mentor.
4. Make any five sheets on nature as per your choice.
5. Make one sheet on collage and one sheet on mosaic painting
SUBJECT: YOGA
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Practice the set of 8 asanas followed by 4 pranayamas everyday
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Prepare the practical file
*Write all asanas, pranayamas, and bandhas-
*Paste or draw pictures of asanas, write their procedure and technique of performing.
*Mention the benifits and precautions to be taken for each of them.
SUBJECT: COMPUTER SCIENCE
Write the following programs in your computer science notebook (after executing in python) with output.
Program1:Program to enter two numbers and print the result of arithmetic operations like +,-,*,/,// and %.
Program2: Write a program to find whether an inputted number is perfect or not. Program 3: Write a Program to check if the entered number is Armstrong or not. Program 4: Write a Program to find factorial of the entered number.
Program5: Write a Program to enter the number of terms and to print the Fibonacci Series.
Program 6: Input any number from user and check is it Prime no. or not
Program7: Write a program to find the occurrence of any word in a string
Program 8: Program to perform logical operation on string.
Program9: Write a menu driven program to check that theentered string is a palindrome or not, to reverse the original string and to print each word of the original string in reverse order.
Program10: Program to implement all user defined functions of a list
Program 11: Program to show various logical operation on List.
Program 12: Program to show various logical operation on nested List
Program13: Program to implement all user defined functions of Dictionary Program 14: Program to create and read text file.
Program15: Write a program to read content of file line by line and display each word separated by '#'.
SUBJECT: PHYSICAL EDUCATION
Prepare a separate practical file for physical education and complete it. Topics are given below:
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Practical 1:- Fitness test administration (SAI Kelo India test, total 6 tests)
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Practical 2:- Procedure for asanas, benefits and contraindications for any two asanas for each life style diseases (Obesity, Asthma, Diabetes, Hypertension, Back pain and arthritis) Total 10/12 Asanas with pictures (Paste/Draw)
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Practical- 3: Anyone I.O.A. recognised Sport/Game of choice. Labelled diagram of Field & Equivalent. Also mention its Rules, Terminologies and skills.
Note:- You can take the help of google.
COMMERCE & HUMANITIES STREAM
SUBJECT: ENGLISH
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Kindly check the English Summer Holiday HW as CBSE Project uploaded in all what’s app groups of Class Xll.
SUBJECT: ECONOMICS
You are advised to complete the following holiday homework neatly and sincerely. The objective of the holiday assignment is to strengthen your conceptual understanding and improve preparation for the Board Examination.
1. ECONOMICS BOARD PROJECT
Prepare the Economics Project strictly according to CBSE guidelines.
Guidelines for the Project:
The project must be handwritten.
Use an A4 size file/folder.
Include proper headings, index, bibliography and acknowledgement.
Draw relevant diagrams, tables, newspaper cuttings and pictures wherever required.
Maintain neatness and creativity.
Topics already has been assigned
Project Format:
Cover Page
Certificate
Acknowledgement
Index
Introduction
Objectives of the Study
Content/Research Work
Data Analysis with Charts/Graphs
Conclusion
Bibliography
2. REVISION WORK
Revise all the syllabus completed till date thoroughly.
Students must:
Revise all notes and NCERT exercises.
Learn definitions, formulas and important concepts.
Practice numerical questions regularly.
Solve previous class tests and assignments.
Read case-study based questions and competency-based questions.
Submission Instructions:
Holiday homework should be submitted on the first working day after vacations.
Late submission may affect internal assessment.
Stay healthy, study regularly and enjoy your holidays wisely.
SUBJECT: ACCOUNTS
(1) PREPARE YOUR PROJECT FILE. ONLY ONE SPECIFIC PROJECT BY USING THE
ANY TWO ANALYTICAL TOOLS.
TOPIC :- ANANLYSIS OF CASH FLOW STATEMENT AND SEGMENT ANALYSIS OF A LTD COMPANY.
REQUIRED :- COLLECT ORIGINAL CASH FLOW STAEMENT AND SEGMENT REPORT OF ANY LTD. CO. FOR THE YEAR ENDED 31ST MARCH 2022 OR 2023.
WRITE THE BASIC OF PROJECT.
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MEANING OF PROJECT.
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ADVANTAGES OF PROJECT.
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SCOPE OF PROJECT.
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AKNOWLEGMENT ECT.
(2) Do the given assignement in home holidays home work note book.
(3) Do following questions in your home work note book.
Ch. 5 CASH FLOW STATEMENT
QUESTION NO : 40,42, 43,44,45.46,47,48,49 And 50.
(4) Do the 4 question of each Ratio from previous years board question Paper.
(5)Practice the previous year Board Question Papers . (only part – B)
SUBJECT: BUSINESS STUDIES
1. You are required to make only one project carrying 20 marks from the following topics
(a) Principles of Management
(b) Elements of Business Environment
(c) Marketing Management
(d) Stock Exchange
2. Do previous year’s Board questions from Chapter 2.
3. Revise Chapter 1 ,2 and 11.
SUBJECT: PHYSICAL EDUCATION
Prepare a separate practical file for physical education and complete it. Topics are given below:
-
Practical 1:- Fitness test administration (SAI Kelo India test, total 6 tests)
-
Practical 2:- Procedure for asanas, benefits and contraindications for any two asanas for each life style diseases (Obesity, Asthma, Diabetes, Hypertension, Back pain and arthritis) Total 10/12 Asanas with pictures (Paste/Draw)
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Practical- 3: Anyone I.O.A. recognised Sport/Game of choice. Labelled diagram of Field & Equivalent. Also mention its Rules, Terminologies and skills.
Note:- You can take the help of google.
SUBJECT: HISTORY
A. Prepare a booklet on any one of the religious faith.
1 Buddhism (Roll no. 1-11)
2 Jainism. (Roll no.12-22)
3 Hinduism (Roll no. 23-33)
B. Start working on CBSE project. Related topics will be shared in the class group.
C. Students good at Art will have to opt for sketch/ art piece on Buddha, Mahavira, Vishnu, Shiva and Shakti. (Any one). They will be exempted from homework A.
D. Revise the syllabus completed before the summer break.
SUBJECT:POL SCIENCE
Political Science Project- Prepare a project according to CBSE guidelines on A-4 size sheets.
Some suggested topics are- *One party Dominance-Congress to BJP post 2026 (depending upon the election results)
*Challenges of nation building
*Alternative centres of power *Change in India’s Foreign Policy
*Globalisation
*Politics and resent development
*The crisis of Democratic order
*India’s relation with its neighbors- any one country can be studied
*Emergency- Reasons and Consequences-
*Regional Aspiration – Separatist Movement- Kashmir
*Challenges to and Restoration of the Congress system
*Security in the contemporary world
*Environment and natural resources
*International organisation
A. Read and revise the chapters taught in the class. Answer the questions sent through the worksheet.
B. Read the newspaper daily, especially the editorial.
C. Revised your PT syllabus.
D. Complete your Notebook.
SUBJECT: GEOGRAPHY
1. Locate and label the following on the world map of India:
(a) Areas of subsistence gathering
(b) Areas of nomadic herding
(c) Areas of commercial livestock rearing
(d) Areas of extensive commercial grain farming
(e) Areas of mixed farming
2. Prepare a project file on Spatial Information Technology / Geographic Information System.
Topics to be covered: explain GIS, advantages and disadvantages, components of GIS, difference between Raster and Vector method (paste the suitable pictures)
SUBJECT: PSYCHOLOGY
Name: ___ Class: XII _ *Movie: *___
1. Character I Studied: ______
Ex: Michael Oher / Forrest Gump / Judy Hopps
2. What problem did the character face? 1-2 lines
3. Which concept from Ch-1 is seen in the character? Tick one
[ ] Intelligence [ ] Emotional Intelligence [ ] Creativity [ ] Aptitude
Scene: _________
4. Which concept from Ch-2 is seen in the character? Tick one
[ ] Self as Subject & Object [ ] Self-Esteem [ ] Personality Trait [ ] Self-Regulation
Explain in 1 line: ________
5. If I were a Psychologist, I will use this method to assess them:
[ ] Self-Report [ ] Projective Test [ ] Behavioural Observation
Reason: _________
6. One thing I learnt about Psychology from this movie:
__________
Submit: On A4 sheet. Marks: 10 | Due: Third day after holidays
SUBJECT: FINE ARTS
1. Make any five composition with minimum with human figures and one animal human figure topics are :
a. Fantasy world
b. Market scene
c. Room interior
d. Children park
e. In the exhibition hall
2. Make one sheet on folk art painting.
3. Make one portrait any one famous Indian Mentor.
4. Make any five sheets on nature as per your choice.
5. Make one sheet on collage and one sheet on mosaic painting
SUBJECT: YOGA
1. Practice the set of 8 asanas followed by 4 pranayamas everyday
2. Prepare the practical file
*Write all asanas, pranayamas, and bandhas-
*Paste or draw pictures of asanas, write their procedure and technique of performing.
*Mention the benifits and precautions to be taken for each of them.
SUBJECT: MATHS
