Important Questions : Introduction to Micro-Economics - Class 12 PDF Download

 Page 1


9 XII ?  Economics
AK
UNIT 1
INTRODUCTION
POINTS TO REMEMBER
q Study of Economics is divided into two branches
(a) Micro economics (b) Macro economics
q Micro economics studies the behaviour of individual economic units.
q Macro economics studies the behaviour of the economy as a whole.
q Economy is an Economic Organisation which provides sources to earn
livelihood.
q Economic problem is the problem of allocation of limited resources available
in the economy.
q Cause of economic problems are :
(a) Unlimited Human Wants (b) Limited Economic Resources
(c) Alternative uses of Resources.
q Central Problems of an Economy
Allocation of Resources
What to produce? How to produce? For whom to produce?
q For the selection of an opportunity, the sacrifice of next best alternative use
is called opportunity cost.
q Production possibility frontier (PPF) shows different combinations of a set
of two goods which can be produced with given resources and production
technology.
Page 2


9 XII ?  Economics
AK
UNIT 1
INTRODUCTION
POINTS TO REMEMBER
q Study of Economics is divided into two branches
(a) Micro economics (b) Macro economics
q Micro economics studies the behaviour of individual economic units.
q Macro economics studies the behaviour of the economy as a whole.
q Economy is an Economic Organisation which provides sources to earn
livelihood.
q Economic problem is the problem of allocation of limited resources available
in the economy.
q Cause of economic problems are :
(a) Unlimited Human Wants (b) Limited Economic Resources
(c) Alternative uses of Resources.
q Central Problems of an Economy
Allocation of Resources
What to produce? How to produce? For whom to produce?
q For the selection of an opportunity, the sacrifice of next best alternative use
is called opportunity cost.
q Production possibility frontier (PPF) shows different combinations of a set
of two goods which can be produced with given resources and production
technology.
10 XII ?  Economics
AK
q Production possibility curve PPC
(a) Slopes downward from left to right because if production of one good
is to increase then production of other good has to be sacrificed.
(b) Concave to the origin because of increasing marginal opportunity cost
or (MRT)
q Rightward shift of PPC indicates increase in resources and improvement in
technology.
q Leftward shift of PPC indicats decrease in resources and degradation in
technology.
q Marginal Rate of Transformation (MRT) is the ratio of number of units of a
good sacrificed to increase one more unit of the other good.
q MRT can also called Marginal opportunity cost. It is defined as the additional
cost in terms of number of units of a good sacrificed to increase an additional
unit of the other good.
VERY SHORT ANSWER TYPE QUESTIONS (1 MARK)
1. With the help of an example, define micro economics.
2. Define macro economics with the help of an example.
3. Define opportunity cost.
4. Why does an economic problem arise?
5. Write two characteristics of resources.
6. What do you mean by scarcity?
7. What do you mean by marginal opportunity cost?
8. What do you mean by an economy?
HOTS
9. What is meant by economising the use of resources?
10. What do you mean by alternative uses of resources?
11. What will be the shape of PPF when MRT is constant?
12. Unemployment in India is a subject matter of Microeconomics or
Marcoeconomics, give reason.
Page 3


9 XII ?  Economics
AK
UNIT 1
INTRODUCTION
POINTS TO REMEMBER
q Study of Economics is divided into two branches
(a) Micro economics (b) Macro economics
q Micro economics studies the behaviour of individual economic units.
q Macro economics studies the behaviour of the economy as a whole.
q Economy is an Economic Organisation which provides sources to earn
livelihood.
q Economic problem is the problem of allocation of limited resources available
in the economy.
q Cause of economic problems are :
(a) Unlimited Human Wants (b) Limited Economic Resources
(c) Alternative uses of Resources.
q Central Problems of an Economy
Allocation of Resources
What to produce? How to produce? For whom to produce?
q For the selection of an opportunity, the sacrifice of next best alternative use
is called opportunity cost.
q Production possibility frontier (PPF) shows different combinations of a set
of two goods which can be produced with given resources and production
technology.
10 XII ?  Economics
AK
q Production possibility curve PPC
(a) Slopes downward from left to right because if production of one good
is to increase then production of other good has to be sacrificed.
(b) Concave to the origin because of increasing marginal opportunity cost
or (MRT)
q Rightward shift of PPC indicates increase in resources and improvement in
technology.
q Leftward shift of PPC indicats decrease in resources and degradation in
technology.
q Marginal Rate of Transformation (MRT) is the ratio of number of units of a
good sacrificed to increase one more unit of the other good.
q MRT can also called Marginal opportunity cost. It is defined as the additional
cost in terms of number of units of a good sacrificed to increase an additional
unit of the other good.
VERY SHORT ANSWER TYPE QUESTIONS (1 MARK)
1. With the help of an example, define micro economics.
2. Define macro economics with the help of an example.
3. Define opportunity cost.
4. Why does an economic problem arise?
5. Write two characteristics of resources.
6. What do you mean by scarcity?
7. What do you mean by marginal opportunity cost?
8. What do you mean by an economy?
HOTS
9. What is meant by economising the use of resources?
10. What do you mean by alternative uses of resources?
11. What will be the shape of PPF when MRT is constant?
12. Unemployment in India is a subject matter of Microeconomics or
Marcoeconomics, give reason.
11 XII ?  Economics
AK
SHORT ANSWER TYPE QUESTIONS (3/4 MARKS)
1. Distinguish between microeconomics and macroeconomics. Give example.
2. Why does an economic problem arise? Explain the problem of 'How to
Produce'?
3. Explain the problem of 'What to Produce' with the help of an example.
4. ?For whom to produce? is a central problem of an economy. Explain.
5. Why is a production possibility curve concave? Explain.
6. Define opportunity cost with the help of an example, how does it differ from
marginal opportunity cost?
7. What is ?Marginal Rate of Transformation?? Explain with the help of an
example.
HOTS
8. What is PP Frontier? Explain it with the help of an imaginary schedule and
diagram.
9. Show the following situation with PPF
(a) Fuller utilisation of resources (b) Growth of resources.
(c) Under utilisation of resources.
10. ?An economy always produces on, but not inside a PPC?. Defend or refute.
11. A lot of people die and many factories were destroyed because of a severe
earthquake in a country. How will it affect the country?s PPC?
12. Calculate MOC from the following table. What will be the shape of PPC and
why.
Combinations Green Chilly (Units) Sugar (Units)
A 100 0
B 95 1
C 85 2
D 70 3
E 50 4
F 25 5
Page 4


9 XII ?  Economics
AK
UNIT 1
INTRODUCTION
POINTS TO REMEMBER
q Study of Economics is divided into two branches
(a) Micro economics (b) Macro economics
q Micro economics studies the behaviour of individual economic units.
q Macro economics studies the behaviour of the economy as a whole.
q Economy is an Economic Organisation which provides sources to earn
livelihood.
q Economic problem is the problem of allocation of limited resources available
in the economy.
q Cause of economic problems are :
(a) Unlimited Human Wants (b) Limited Economic Resources
(c) Alternative uses of Resources.
q Central Problems of an Economy
Allocation of Resources
What to produce? How to produce? For whom to produce?
q For the selection of an opportunity, the sacrifice of next best alternative use
is called opportunity cost.
q Production possibility frontier (PPF) shows different combinations of a set
of two goods which can be produced with given resources and production
technology.
10 XII ?  Economics
AK
q Production possibility curve PPC
(a) Slopes downward from left to right because if production of one good
is to increase then production of other good has to be sacrificed.
(b) Concave to the origin because of increasing marginal opportunity cost
or (MRT)
q Rightward shift of PPC indicates increase in resources and improvement in
technology.
q Leftward shift of PPC indicats decrease in resources and degradation in
technology.
q Marginal Rate of Transformation (MRT) is the ratio of number of units of a
good sacrificed to increase one more unit of the other good.
q MRT can also called Marginal opportunity cost. It is defined as the additional
cost in terms of number of units of a good sacrificed to increase an additional
unit of the other good.
VERY SHORT ANSWER TYPE QUESTIONS (1 MARK)
1. With the help of an example, define micro economics.
2. Define macro economics with the help of an example.
3. Define opportunity cost.
4. Why does an economic problem arise?
5. Write two characteristics of resources.
6. What do you mean by scarcity?
7. What do you mean by marginal opportunity cost?
8. What do you mean by an economy?
HOTS
9. What is meant by economising the use of resources?
10. What do you mean by alternative uses of resources?
11. What will be the shape of PPF when MRT is constant?
12. Unemployment in India is a subject matter of Microeconomics or
Marcoeconomics, give reason.
11 XII ?  Economics
AK
SHORT ANSWER TYPE QUESTIONS (3/4 MARKS)
1. Distinguish between microeconomics and macroeconomics. Give example.
2. Why does an economic problem arise? Explain the problem of 'How to
Produce'?
3. Explain the problem of 'What to Produce' with the help of an example.
4. ?For whom to produce? is a central problem of an economy. Explain.
5. Why is a production possibility curve concave? Explain.
6. Define opportunity cost with the help of an example, how does it differ from
marginal opportunity cost?
7. What is ?Marginal Rate of Transformation?? Explain with the help of an
example.
HOTS
8. What is PP Frontier? Explain it with the help of an imaginary schedule and
diagram.
9. Show the following situation with PPF
(a) Fuller utilisation of resources (b) Growth of resources.
(c) Under utilisation of resources.
10. ?An economy always produces on, but not inside a PPC?. Defend or refute.
11. A lot of people die and many factories were destroyed because of a severe
earthquake in a country. How will it affect the country?s PPC?
12. Calculate MOC from the following table. What will be the shape of PPC and
why.
Combinations Green Chilly (Units) Sugar (Units)
A 100 0
B 95 1
C 85 2
D 70 3
E 50 4
F 25 5
12 XII ?  Economics
AK
ANSWER OF VERY SHORT TYPE QUESTIONS
1. Micro Economics is that branch of economics in which economic problems
are studied at individual level e.g. the behaviour of consumer, firms, etc.
2. Macro economics is that branch of economics which studies the economy
as a whole and its aggregates e.g. National income, the level of employment.
3. For the selection of an opportunity, the sacrifice of next best alternative use
is called opportunity cost.
4. An economic problem arises due to scarcity of resources having alternative
uses in relation to unlimited wants.
5. Resources are scarce (limited) and they have alternative uses.
6. Scarcity refers to a situation in which demand is more than supply.
7. Marginal rate of transformation (MRT) is the ratio of one good sacrificed to
increase one more unit of the other good.
8. An economy is an economic organisation which provides sources to earn
livelihood.
9. Economising the resources means that resources are to be used in a
manner such that maximum output is realised per unit of output. It also
means optimum utilisation of resources.
10. Alternate use of resources mean, more than one uses to which a resource
can be put.
11. Shape of PPF will be a straight line sloping down ward.
12. Unemployment in India is a subject matter of macroeconomics because it
relates to economy as whole.
HINTS [3 MARKS QUESTIONS]
12. Combinations MOC
A ?
B 5
C 10
D 15
E 20
F 25