Vidaara.orgClass 11 · Mathematics
CodeVID-M11-WS
Supply — Practice Worksheet
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Choose the correct option (A, B, C or D) for each question.
- The answer key is at the end — try the paper first!
Section A — Multiple Choice (1 mark each)
15 × 1 = 15 marks
1.
Supply is the quantity a producer is willing and able to:
- A.Buy
- B.Sell at a given price
- C.Store only
- D.Destroy
2.
The total quantity available is called:
- A.Supply
- B.Stock
- C.Demand
- D.Surplus
3.
The total quantity all firms are willing to sell is:
- A.Individual supply
- B.Market supply
- C.Stock
- D.Demand
4.
The supply curve normally slopes:
- A.Downward
- B.Upward
- C.Horizontally
- D.Vertically
5.
The law of supply states price and quantity supplied move in the:
- A.Same direction
- B.Opposite direction
- C.No direction
- D.Reverse only
6.
Producers supply more at higher prices because higher prices mean:
- A.More profit
- B.Less profit
- C.No change
- D.Higher tax only
7.
Which is a determinant of supply other than the good's own price?
- A.Prices of inputs
- B.The colour of the shop
- C.The day of the week only
- D.Consumer taste only
8.
Better technology usually causes supply to:
- A.Decrease
- B.Increase
- C.Stay the same
- D.Become zero
9.
A change in the good's own price causes a:
- A.Movement along the supply curve
- B.Shift of the supply curve
- C.New curve only
- D.No change
10.
A subsidy to producers usually shifts the supply curve:
- A.Leftward (decrease)
- B.Rightward (increase)
- C.Vertically
- D.It does not move
11.
A tax on a good usually shifts the supply curve:
- A.Rightward
- B.Leftward (decrease)
- C.Up only
- D.It stays fixed
12.
Elasticity of supply measures responsiveness of quantity supplied to:
- A.Income
- B.Price
- C.Population
- D.Taste
13.
If Eₛ > 1, supply is:
- A.Inelastic
- B.Elastic
- C.Unit elastic
- D.Perfectly inelastic
14.
A vertical supply curve shows supply that is:
- A.Perfectly elastic
- B.Perfectly inelastic
- C.Unit elastic
- D.Elastic
15.
Supply tends to be more elastic in the:
- A.Long run
- B.Short run
- C.Market period only
- D.It is always inelastic
Section B — Challenge / Olympiad (2 marks each)
10 × 2 = 20 marks
16.
The price of tomatoes rises and farmers bring more tomatoes to the market. This is best described as a:
- A.Movement (extension) along the supply curve
- B.Rightward shift
- C.Leftward shift
- D.New supply curve
17.
A new machine halves a factory's production cost. At every price the firm now offers more, so the supply curve:
- A.Shifts to the right (increase in supply)
- B.Shifts left
- C.Stays fixed
- D.Becomes vertical
18.
Price of a good rises from ₹40 to ₹50 and quantity supplied rises from 200 to 260. The elasticity of supply is:
- A.1.2
- B.0.83
- C.2.5
- D.0.3
19.
Fresh fish that cannot be stored has very inelastic supply in the short period mainly because the quantity:
- A.Cannot be increased quickly when price rises
- B.Always doubles
- C.Falls with price
- D.Is unlimited
20.
A heavy tax imposed on cigarettes raises their cost of production. This will:
- A.Decrease supply (shift the curve left)
- B.Increase supply
- C.Not affect supply
- D.Make supply vertical
21.
Why is supply usually more elastic in the long run than in the short run?
- A.Firms can change all factors and expand capacity over time
- B.Prices never change
- C.Demand disappears
- D.Stocks vanish
22.
If the price of wheat (which a farmer could also grow) rises sharply, the farmer's supply of rice may:
- A.Fall, as he switches land to wheat
- B.Rise
- C.Stay exactly the same
- D.Become infinite
23.
Distinguishing supply from stock matters because only supply is the part of the stock that is:
- A.Actually offered for sale at a price
- B.Destroyed
- C.Demanded
- D.Taxed
24.
A perfectly inelastic supply (Eₛ = 0) means that when price changes, quantity supplied:
- A.Does not change at all
- B.Changes a lot
- C.Falls to zero
- D.Doubles
25.
A single rule to separate a movement from a shift in supply is:
- A.Own price → movement; any other factor → shift
- B.Any change → shift
- C.Any change → movement
- D.Tax → movement; price → shift
Answer Key
Section A — Multiple Choice (1 mark each)
- (B) Sell at a given price
- (B) Stock
- (B) Market supply
- (B) Upward
- (A) Same direction
- (A) More profit
- (A) Prices of inputs
- (B) Increase
- (A) Movement along the supply curve
- (B) Rightward (increase)
- (B) Leftward (decrease)
- (B) Price
- (B) Elastic
- (B) Perfectly inelastic
- (A) Long run
Section B — Challenge / Olympiad (2 marks each)
- (A) Movement (extension) along the supply curve
- (A) Shifts to the right (increase in supply)
- (A) 1.2
- (A) Cannot be increased quickly when price rises
- (A) Decrease supply (shift the curve left)
- (A) Firms can change all factors and expand capacity over time
- (A) Fall, as he switches land to wheat
- (A) Actually offered for sale at a price
- (A) Does not change at all
- (A) Own price → movement; any other factor → shift
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