HOLIDAY HOMEWORK FOR THE SUMMER VACATION (2018-2019) CLASS-XI Commerce/Science

 NAME: _______________________ ENGLISH: Do the Pages 41 - 44, 67-68, 103, 161-164 in Together With, English Core Pull Out Work Sheets. COMMERCE BUSINESS STUDIES: Do the Project Work given in Class. ECONOMICS: Do the Project Work given in Class ACCOUNTS: Do the given Work sheets SCIENCE PHYSICS: Do the given Worksheet CHEMISTRY: Do the given Worksheet (Atomic Structure and Numericals) MATH: Do the given Worksheet (Trigonometry and Sets) OPTIONAL SUBJECTS PHYSICAL EDUCATION: Do the Project work on any game of your choice. COMPUTER SCIENCE: Do the given Worksheet (CSO) INFORMATION PRACTICES: Do the given Worksheet MATH: Do the given Worksheet (Trigonometry and Sets) HINDI: fgUnh O;kdj.k dh iqLrd vfHkO;fDr vkSj ek/;e d svk/kkj ij tulapkj d sek/;ek sadk o.kZu djrs gq, ,d izkstsDV rS;kj dhft,A 1&tulapkj 2&fizaV ek/;e&lekpkj vkSj laikndh; 3&bySDVªkWfud lapkj ek/;e 4&i=dkfjrk 5&lekpkj ys[ku 6&baVjusV Class- XI Subject- Mathematics (2018-2019 Holiday Assignment) 1) Given U = {x: x } . List the elements of the given set. 2) Given U = {x : x i) A‟ ii) B‟ iii) 3) Draw Venn-diagrams to represent: i) 4) The combined membership of the Mathematics Association and Science Club is 122. What is the membership of Science Club if 50 are known to be members of the Mathematics Association and 28 are members of both the organizations? 5) In a group of 28 persons, 9 take tea but not coffee and 16 take tea. How many take coffee but not tea? 6) Out of a group of 120 students, 90 take Mathematics and 72 take History. If 10 students take neither of the two, how many take both? 7) Of the members of three athletic teams in a certain school, 21 are on the basketball team, 26 on the hockey team and 29 on the football team, 14 play hockey and basketball, 15 play hockey and football, and 12 play football and basketball, 8 are on all the three teams. How many members are there altogether ? 8) A survey shows that 80% of the Indians like apples, whereas 53% like oranges. What percentage of Indian like both apples and oranges. 9) Prove that: 10) Prove that: tan 75o + cot 75o = 4 11) Prove that : ( ) . 12) Prove that: 13) Prove that: . 14) If sin x = cos y = , find the value of cos (x [ ] 15) Find the general solution for each of the following equations : i) sin 5x = sin x ii) tan 3x + cot ( ) = 0. 16) Find the general solution: √ √ . 17) Find sin 2x, cos 2x and tan 2x : If sin 2x = √ 18) If 0 < x < and cos x + sin x = then find the value of tan x. 19) If sin A = n sin B, then prove that: . 20) If cos x + 21) If 22) If cot x + cosec x = √ . Class- XI Chemistry (2018-2019 Holiday Assignment) Q1) Give the electronic configuration of Sc, Cu, Cr, Fe2+, Cr3+ and S2- . Q2) What is the total number of orbitals associated with the principal quantum number n = 3? Q3) Using s, p, d, f notations, describe the orbital with the following quantum numbers (a) n = 2, l = 1, (b) n = 4, l = 0, (c) n = 5, l = 3, (d) n = 3, l = 2 Q4) Write down the quantum numbers n,l and m for the following orbitals (a) (b) (c) Q5) Indicate the number of unpaired electrons in : (a) P, (b) Ni2+, (c) Fe3+ (d) O Q6) (a) How many sub-shells are associated with n = 4 ? (b) If n =3, what are the possible values of l? (c) How many electrons will be present in the sub-shells having s value of –1/2 for n = 4 ? Q7) An electron is in 4f orbital. What possible values for the Q.N. n, l, m and s can it have? Q8) Give the values of the Q.N. for the electron with the highest energy in sodium atom. Q9) Give the values of all the four QN for last electron of (a) Sc(21) (b) Ti(22). Q10) How many electrons in an atom may have the following quantum numbers? (a) n = 4, s= – ½ (b) n = 3, l = 0 Q11)Explain, giving reasons, which of the following sets of quantum numbers are not possible. (a) n = 0, l = 0, m = 0, s = + ½ (b) n = 1, l = 0, m = 0, s = – ½ (c) n = 1, l = 1, m = 0, s = + ½ (d) n = 2, l = 1, m = 0, s = – ½ Q12)An electron is in one of the 3d orbitals. Give the possible values of n, l and m for this electron. Q13)An atom of an element contains 29 electrons and 35 neutrons. Deduce (i) the number of protons and (ii) the electronic configuration of the element. Q14)(a) What is the lowest value of n that allows g orbitals to exist? (b) How many electrons are present in all subshells with (n + l) =5? (c) which out of Cu2+, Fe2+ and Cr3+ has highest Paramagnetism and why? Q15)On the basis of Heisenberg uncertainty principle shoe that electron cannot exist within the nucleus. Q16)A golf ball has a mass of 40g, and a speed of 45 m/s. If the speed can be measured within accuracy of 2%, calculate the uncertainty in the position. Ans- 1.46×10–33 m Q17)A microscope using suitable photons is employed to locate an electron in an atom within a distance of 0.1 Å. What is the uncertainty involved in the measurement of its velocity? Ans- 5.79×106 m s–1 Q18)If the position of the electron is measured within an accuracy of + 0.002 nm, calculate the uncertainty in the momentum of the electron. Suppose the momentum of the electron is h/4πm × 0.05 nm, is there any problem in defining this value. Ans- 2.638 × 10-23kg m s-1 Class- XI Physics (2018-2019 Holiday Assignment) Q1 which of the following is the most precise of data (100 – 5) cm or (100 – .5) cm Q.2 Fill in the blanks by suitable conversion of units (a) 1 kg m2 s–2 = ....g cm 2 s –2 (b) 1 m = ..... ly (c) 3.0 m s–2 = .... km h–2 (d) G = 6.67 × 10–11 N m2 (kg)–2 = .... (cm)3 s –2 g –1 . Q.3 A new unit of length is chosen such that the speed of light in vacuum is unity. What is the distance between the Sun and the Earth in terms of the new unit if light takes 8 min and 20 s to cover this distance? Q.4 Consider a simple pendulum, having a bob attached to a string that oscillates under the action of the force of gravity. Suppose that the period of oscillation of the simple pendulum depends on its length (l), mass of the bob (m) and acceleration due to gravity (g). Derive the expression for its time period using method of dimensions. Q.5. Fill in the blanks by suitable conversion of units (a) 1 kg m2 s -2 = ....g cm2 s -2 (b) 1 m = ..... ly (c) 3.0 m s-2 = .... Km h-2 (d) G = 6.67 × 10-11 N m2 (kg)-2 = .... (cm)3 s -2 g -1 . Q6. A physical quantity P is related to four observables a, b, c and d as follows: p=a4 b 3 /c3 d the percentage errors of measurement in a, b, c and d are 1%, 3%, 4% and 2%, respectively. What is the percentage error in the quantity P? If the value of P calculated using the above relation turns out to be 3.763, to what value should you round off the result? Q7. State the number of significant figures in the following: (a) 0.007 m2 (b) 2.64 × 1024 kg (c) 0.2370 g cm Q8. The mass of a box measured by a grocers balance is 2.300 kg. Two gold pieces of masses 20.15 g and 20.17 g are added to the box. What is (a) the total mass of the box, (b) the difference in the masses of the pieces to correct significant figures? Q9. The Sun‟s angular diameter is measured to be 1920′′. The distance D of the Sun from the Earth is 1.496 × 1011 m. What is the diameter of the Sun? Q.10 Calculate the angle of (a) 10 (degree) (b) 1′ (minute of arc or arcmin) and (c) 1″(second of arc or arc second) in radians. Use 3600=2π rad, 10=60′ and 1′ = 60 ″ Q.11 Find the relative error in Z, if Z = A4B 1/3/CD3/2 . Q.12 Fill in the blanks (a) The volume of a cube of side 1 cm is equal to.....m3 (b) The surface area of a solid cylinder of radius 2.0 cm and height 10.0 cm is equal to ... (mm) 2 (c) A vehicle moving with a speed of 18 km h–1 covers....m in 1 s (d) The relative density of lead is 11.3. Its density is ....g cm–3 or ....kg m–3 . Class- XI ACCOUNTANCY (2018-2019 Holiday Assignment) INTRODUCTION TO ACCOUNTING (1) Define Accounting as per AICPA. What are its main objectives? (2) Define Book Keeping. What is the function of book keeping? (3) Differentiate between book keeping & accounting. (4) Explain the advantages of Accounting (5) Discuss the limitations of accounting. (6) State the different users of accounting information and their informational needs. (7) Explain the qualitative characteristics of accountancy. (8) “Accounting calls for lot of ethical consideration.” Do you agree? (9) Giving examples, explain each of the following (i) tangible assets (ii) intangible assets (iii) liability (iv) drawings (v) revenue (vi) expenses (vii) income (viii) cost (ix) debtors (x) creditors (xi) stock (10) Draw a diagram of branches in accounting. (11) Distinguish between trade discount and cash discount. (12) Explain cost concept. (13) What is mean by accounting standard? What is the main objective of accounting standard? (14) Explain the following concepts. a. Business entity concept b. Going concern concept c. Revenue recognition concept (15) Explain the utility of Accounting Standards. (16) Which principle assumes that a business enterprise will not be liquidated in near future? (17) “Closing stock is valued lower than the market price” which concept of accounting is applied here? (18) „An asset may defined as a bundle of services‟ – explain with an example. (19) Under which accounting principle, quality of manpower is not recommended in the books of accounts? (20) Classify the following accounts according to traditional as well as modern approach of accounting: 1) Capital brought in 2) Drawings A/c 3) Building purchased 4) Purchases A/c 5) Sales A/c 6) Carriage inward paid 7) Cash received 8) Interest paid 9) Discount allowed 10) Conveyance charges 11) Subscription received 12) Light, power and electricity 13) Bad debts written off 14) Bad debts recovered 15) Discount received 16) Furniture and fixtures purchased 17) Bank A/c 18) Sales promotion expenses 19) Loan A/c of a partner 20) Sales return 21) Bank overdraft 22) Sales returns 23) Prepaid rent A/c 24) Interest accrued 25) Outstanding salary 26) Interest received in advance 27) Goodwill 28) Loss by fire 29) Patents 30) Ram(debtor) Class- XI ACCOUNTANCY (2018-2019 Holiday Assignment) RECORDING OF TRANSACTION Accounting Equation : 1.Following are the nine basic transactions: Increase in assets with corresponding increase in capital. Increase in assets with corresponding increase in liabilities. Decrease in assets with corresponding decrease in capital. Decrease in assets with corresponding decrease in liabilities. Increase and decrease in assets. Increase and decrease in liabilities Increase and decrease in capital Increase in liabilities and decrease in capital Increase in capital and decrease in liabilities. 2.Show the effect of the following business transactions on assets, liabilities and capital through accounting equations: 1.Commenced business with cash 20,000 2.Goods purchased on credit 7,000 3.Furniture purchased 3,000 4.paid to creditors 2,000 5.Amount withdrawn by the proprietor 4,000 6.Creditors accepted a bill for payment 1,500 7.interest on capital 1,000 8.Transfer from capital to loan 5,000 9.Allotted shares to creditors 1,000 3.Prepare Accounting equation on the basis of following information: (1) Sohan started business with cash =80,000 Machinery =10,000 And stock =10,000 (2) Interest on the above capital was allowed @ 10% (3) Money withdrew from the business for his personal use 10,000/- (4) Interest on drawings 500/- (5) Depreciation charged on machinery 2,000/- 4.How the assets liabilities and capital will be affected under following cases: (1) Purchase of building for cash (2) Purchase of furniture on credit (3) Receipt of commission (4) Payment to creditors. Class 11 Computer System Organization (2018-19) Holiday Home Work ---------------------------------------------------------------------------------------------------- Q1. Expand the following:- RAM, ROM, BIOS, POST , CD, DVD, PD, CAD, CAM,MIDI, CU, ALU, CPU,PDA,LCD,CAE Q2.One word answers: a. The instructions ( programs ) that tell the computer what to do. b. The physical parts of the computer, the ones that you can touch. c. Unprocessed raw facts and figures. d. The processed data that is meaningful. e. Part of computer known as brain or heart of computer. f. Part of computer known as storage brain of computer, which holds the data during processing. g. Part of computer responsible for process phase. h. Name the type of computer embedded within the circuitry of appliances, such as televisions, washing machines, modern age cars and wrist watches. i. Name the type of computer vary enormously in their computational power, speed, memory and physical size. The smallest of these computers can be held in one hand and are called PDAs. j. The type of computer used by housewife. k. Name the type of computer similar to personal computers but have greater memory and more extensive mathematical abilities. l. Name the type of computer have more memory, speed and capabilities than workstations and are usually shared by multiple users through a series of interconnected computers. Used by Utility companies and Banks etc. m. Name the type of computer which is most powerful. Q3. Answer the following questions: 1. Which electronic device invention brought revolution in earlier computers? 2. Which memory is responsible for booting of system? 3. Where do you find analog computers in daily life? 4. What do you mean by term firmware? 5. What do you mean by language processors? Why we need it? 6. Give any example of hybrid computer in daily life. 7. Can we think of a computer system without operating system? Justify your answer. 8. Fifth generation of computer is a symbol of intelligence. Why? 9. Which is better for translator & why? Compiler or Interpreter. 10. What do you mean by Defragmentation? 11. Which port a mouse should be connected? 12. What is difference between USB & Firewire Port? 13. What is cache memory? 14. Convert the followings: 101001.0101 to decimal (236)8 to Binary (266)10 to Hexadecimal (AF2)16 to Binary 0101110.1010110 to Hexadecimal 15. Draw Software classification Chart.