Sunday, May 17, 2020
Saturday, May 16, 2020
HOLIDAYS HOMEWORK MATHS
Chapter 1
1mark
1. If and the composite function then is equal to_________________.
2. Let R be the relation in the set Z of integers given by R= {(): 3 divides}.
Show that the relation R symmetric? Write the equivalence class [1].
3. Examine whether the operation * defined on R by a * b = ab + 1 is (i) a
binary or not. (ii) if a binary operation, is it associative or not ?
(2019BVM/65/1/1)
4. Examine whether the operation * defined on , the set of all real numbers, by
= is a binary operation or not, and if it is a binary operation, find whether it
is associative or not. (2019BVM/65/2/1)
5. If * is defined on the set R of all real numbers by *: a * b = , find the
identity element, if it exists in with respect to *. (2019BVM/65/3/1.3)
6. Let * be a binary operation on R – {– 1} defined by , for all a, b R – {–
1}.Show that * is neither commutative nor associative in R – {– 1}.
(2019/BVM/65/3/2)
4 marks
7. Let f: A → B be a function defined as f(x) =, where and B = . Is the function
f one - one and onto? Is f invertible? If yes, then find its inverse.
4
8. Show that the relation R on defined as R = {(a, b): a ≤ b}, is reflexive, and
transitive but not symmetric. (2019BVM/65/1/1)
OR
Prove that the function f: N N, defined by f(x) = x 2 + x + 1 is one-one but
not onto. Find inverse of f: N S, where S is range of f. (2019BVM/65/1/1)
9. Check whether the relation R defined on the set A = {1, 2, 3, 4, 5, 6} as
R={(a,b) : b = a + 1} is reflexive, symmetric or transitive.
(2019BVM/65/2/1)
OR
Let f: N Y be a function defined as f(x) = 4x + 3, where Y = {y N: y = 4x+
3, for some x N}. Show that f is invertible. Find its inverse.
(2019BVM/65/2/1)
10. Show that the relation R on the set Z of all integers, given by
R = {(a, b) : 2 divides (a – b)} is an equivalence relation.
(2019BVM/65/3/1.2.3)
OR
If f(x) = , show that fof(x) = x for all . Also, find the inverse of f.
(2019BVM/65/3/1.2.3)
1mark
1. If and the composite function then is equal to_________________.
2. Let R be the relation in the set Z of integers given by R= {(): 3 divides}.
Show that the relation R symmetric? Write the equivalence class [1].
3. Examine whether the operation * defined on R by a * b = ab + 1 is (i) a
binary or not. (ii) if a binary operation, is it associative or not ?
(2019BVM/65/1/1)
4. Examine whether the operation * defined on , the set of all real numbers, by
= is a binary operation or not, and if it is a binary operation, find whether it
is associative or not. (2019BVM/65/2/1)
5. If * is defined on the set R of all real numbers by *: a * b = , find the
identity element, if it exists in with respect to *. (2019BVM/65/3/1.3)
6. Let * be a binary operation on R – {– 1} defined by , for all a, b R – {–
1}.Show that * is neither commutative nor associative in R – {– 1}.
(2019/BVM/65/3/2)
4 marks
7. Let f: A → B be a function defined as f(x) =, where and B = . Is the function
f one - one and onto? Is f invertible? If yes, then find its inverse.
4
8. Show that the relation R on defined as R = {(a, b): a ≤ b}, is reflexive, and
transitive but not symmetric. (2019BVM/65/1/1)
OR
Prove that the function f: N N, defined by f(x) = x 2 + x + 1 is one-one but
not onto. Find inverse of f: N S, where S is range of f. (2019BVM/65/1/1)
9. Check whether the relation R defined on the set A = {1, 2, 3, 4, 5, 6} as
R={(a,b) : b = a + 1} is reflexive, symmetric or transitive.
(2019BVM/65/2/1)
OR
Let f: N Y be a function defined as f(x) = 4x + 3, where Y = {y N: y = 4x+
3, for some x N}. Show that f is invertible. Find its inverse.
(2019BVM/65/2/1)
10. Show that the relation R on the set Z of all integers, given by
R = {(a, b) : 2 divides (a – b)} is an equivalence relation.
(2019BVM/65/3/1.2.3)
OR
If f(x) = , show that fof(x) = x for all . Also, find the inverse of f.
(2019BVM/65/3/1.2.3)
Thursday, May 14, 2020
HOLIDAYS HOMEWORK GEOGRAPHY
Holiday Home Work
CLASS XII Geography
Ch. 1 Human Geography-Nature Scope,
Ch. 2 The
World population,
Ch.3
Population Composition
1. Reading Work:- Read the
all three chapters of Geography
2. Make 10 MCQ questions with answers from each chapters
3. What is the differences
between `Determinism’ and `Possibilism’ with example?
4. What is `Neodeterminism’?
Explain it with example.
5. Write the three stage of
Demographic Transition with example.
6. What is the factors
influencing the distribution of population? Explain with example.
Tuesday, May 12, 2020
HOLIDAYS HOMEWORK ENGLISH
KENDRIYA VIDYALAYA AFS NALIYA
CLASS: XII SUBJECT: ENGLISH
HOLIDAY HOMEWORK
1. Write summary of the following chapters;
1. Third Level
2. The Tiger King
3. The Last Lesson
4. Lost Spring
5. Deep Water
2. Write a debate on ‘Lockdown is an essential step to triumph covid-19
epidemic’.
3. Write any two advertisements.
4. Your school is going to celebrate ‘Environment Day’ on 5 June. As a
head boy/head girl of the school prepare a speech for the school
assembly.
5. Write a letter to place an order of 11 set computer for your school.
CLASS: XII SUBJECT: ENGLISH
HOLIDAY HOMEWORK
1. Write summary of the following chapters;
1. Third Level
2. The Tiger King
3. The Last Lesson
4. Lost Spring
5. Deep Water
2. Write a debate on ‘Lockdown is an essential step to triumph covid-19
epidemic’.
3. Write any two advertisements.
4. Your school is going to celebrate ‘Environment Day’ on 5 June. As a
head boy/head girl of the school prepare a speech for the school
assembly.
5. Write a letter to place an order of 11 set computer for your school.
HOLIDAYS HOMEWORK PHYSICS
CLASS-
Xll
SUBJECT-PHYSICS
Q.1 Derive the expression of Gauss’s law.
Q.2 Derive formulas
of intensity of electric field due to a dipole at axial point and equatorial
point.
Q.3 Derive the
expression of intensity of electric field due to a uniformly charged sphere at
outside, surface and inside point by using Gauss law and draw the graph also.
Q.4 Derive the
expression of intensity of electric field due to line charge distribution of
infinite length using Gauss law.
Q.5 Read chapter
02-electrostatic potential & capacitance and prepare short notes on the
given topics-
(i)
Electrostatic potential and potential difference
(ii)
Potential due to a conducting and non conducting sphere
(iii)
Potential due to an electric dipole at a point (r, Ѳ)
(iv)Electrostatic
potential energy due to a distribution of charges
(v)
Capacitance of a parallel plate capacitor
(vi)Energy
and energy density between plates of capacitor
(vii)
Series and parallel combination of capacitors
(viii)Wheatstone
bridge and its balanced condition
Q.6 Do first
exercise of chapter 01-electric charge and field.
Q.7 Do first
exercise of chapter 02-electrostatic potential and capacitance.
HOLIDAY HOME WORK HISTORY
HOLIDAY HOME WORK
CLASS- XII SUBJECT- HISTORY
CHAPTER 1- BRICKS, BEADS AND BONES
CHAPTER 2- KINGS, FARMERS AND TOWNS
CHAPTER 3- KINSHIP, CASTE AND CLASS
(1) READ THE CHAPTERS COMPLETELY AND WRITE BRIEF SUMMARY.
(2) WATCH RELATED VIDEOES ON YOUTUBE CHANNEL UPLOADED BY K V A F S TEACHERS.
(3) MAKE 20 MCQ TYPE QUESTIONS FROM EACH CHAPTER WITH ANSWER AND WRITE IN
COPY.
CLASS- XII SUBJECT- HISTORY
CHAPTER 1- BRICKS, BEADS AND BONES
CHAPTER 2- KINGS, FARMERS AND TOWNS
CHAPTER 3- KINSHIP, CASTE AND CLASS
(1) READ THE CHAPTERS COMPLETELY AND WRITE BRIEF SUMMARY.
(2) WATCH RELATED VIDEOES ON YOUTUBE CHANNEL UPLOADED BY K V A F S TEACHERS.
(3) MAKE 20 MCQ TYPE QUESTIONS FROM EACH CHAPTER WITH ANSWER AND WRITE IN
COPY.
HOLIDAYS HOMEWORK HINDI
केन्द्रीय विद्यालय , वायु सेना स्थल, नलिया
ग्रीष्मावकाश गृहकार्य (विषय : हिंदी)
कक्षा – बारहवीं
1. शहर में बढ़ती यातायात (ट्रैफिक) समस्या की ओर ध्यान आकृष्ट कराते हुए किसी
दैनिक समाचार-पत्र के संपादक को पत्र लिखिए।
2. जनसंचार और माध्यम के निम्नलिखित विषयों पर टिप्पणी लिखिए–
i) पत्रकारिता के प्रकार, ii) छह ककार iii) मुद्रित माध्यम (प्रिंट मीडिया)
3. निम्नलिखित सभी पाठों का ध्यानपूर्वक अध्ययन कर एक पृष्ठ में अपने शब्दों में पाठ का
सारांश लिखें-
i) बाजार दर्शन
ii) सिल्वर वैडिंग
4. ‘आत्मपरिचय और भक्तिन’ पाठों पर आधारित निम्नलिखित प्रश्नों के उत्तर लिखिए -
i) आत्मपरिचय कविता के कवि की संसार के बारे में क्या राय है?
ii) ‘जहां पर दाना रहते हैं वही नादान भी होते हैं।‘ कवि ने ऐसा क्यों कहा होगा ?
iii) भक्तिन अपना वास्तविक नाम लोगों से क्यों छुपाती थी ? इसको यह भक्तिन नाम
किसने और क्यों दिया ?
iv) ‘भक्तिन अच्छी है, यह कहना कठिन होगा, क्योंकि उसमें दुर्गुणों का अभाव नहीं।‘
लेखिका महादेवी वर्मा ने ऐसा क्यों कहा होगा ?
5. निम्नलिखित विषयों पर रचनात्मक लेख लिखें – (शब्द–सीमा 150 शब्द)
अ. वैश्विक महामारी-कोरोना और लॉकडाउन
ब. करत करत अभ्यास के जड़मति होत सुजान
स. बदलता युग- बदलती मान्यताएँ
ग्रीष्मावकाश गृहकार्य (विषय : हिंदी)
कक्षा – बारहवीं
1. शहर में बढ़ती यातायात (ट्रैफिक) समस्या की ओर ध्यान आकृष्ट कराते हुए किसी
दैनिक समाचार-पत्र के संपादक को पत्र लिखिए।
2. जनसंचार और माध्यम के निम्नलिखित विषयों पर टिप्पणी लिखिए–
i) पत्रकारिता के प्रकार, ii) छह ककार iii) मुद्रित माध्यम (प्रिंट मीडिया)
3. निम्नलिखित सभी पाठों का ध्यानपूर्वक अध्ययन कर एक पृष्ठ में अपने शब्दों में पाठ का
सारांश लिखें-
i) बाजार दर्शन
ii) सिल्वर वैडिंग
4. ‘आत्मपरिचय और भक्तिन’ पाठों पर आधारित निम्नलिखित प्रश्नों के उत्तर लिखिए -
i) आत्मपरिचय कविता के कवि की संसार के बारे में क्या राय है?
ii) ‘जहां पर दाना रहते हैं वही नादान भी होते हैं।‘ कवि ने ऐसा क्यों कहा होगा ?
iii) भक्तिन अपना वास्तविक नाम लोगों से क्यों छुपाती थी ? इसको यह भक्तिन नाम
किसने और क्यों दिया ?
iv) ‘भक्तिन अच्छी है, यह कहना कठिन होगा, क्योंकि उसमें दुर्गुणों का अभाव नहीं।‘
लेखिका महादेवी वर्मा ने ऐसा क्यों कहा होगा ?
5. निम्नलिखित विषयों पर रचनात्मक लेख लिखें – (शब्द–सीमा 150 शब्द)
अ. वैश्विक महामारी-कोरोना और लॉकडाउन
ब. करत करत अभ्यास के जड़मति होत सुजान
स. बदलता युग- बदलती मान्यताएँ
Monday, May 4, 2020
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