PHYSICS PAPER 2

SECTION A SECTION B SECTION C

Structured Question[ 8 Questions ]

60 Marks

Essay Question[ 2 Questions ]

20 Marks

Essay Question[ 2 Questions ]

20 Marks

ESSAY QUESTIONS

UNDERSTANDING[Working principle,

Process](3/4 marks)

CONCEPTUALISING[Comparison &

deduction](5 marks)

PROBLEM SOLVING[Design, modification]

(10 marks)

DECISION MAKING[Characteristics]

(8/10 marks)

SECTION B

1) Definition [1 mark]

2) Conceptualising [ 5 marks]

3) Understanding [3/4 marks]

4) Problem Solving [10 marks]

SECTION C

1) Definition [1 mark]

2) Understanding [ 3/4 marks]

3) Problem Solving / Calculation [3/4 marks]

4) Decision Making [8/10 marks]

Explain how we can suck water in a cup usinga straw.

A) UNDERSTANDING

- When we suck the air in the straw out, the air pressure

decreases.

- The atmosphere pressure is higher than the air pressure

- The water in the cup is pushed into the straw.

in the straw.

Explain how we can suck water in a cup using a straw.

Jelaskan bagaimana kita boleh menyedut air dalam cawan menggunakan straw.

UNDERSTANDING

Diagram 1(a) and 1(b) show the level of water when an empty containerand a filled container is put into the beaker.

Using diagram 1(a) and 1(b), compare the total weight of container, volume of displaced water and the weight of displaced water.

Relate the total weight of the container and the weight of displaced waterto deduce one physics principle.

B) CONCEPTUALISING

Diagram 1 Diagram 1(a) Diagram 1(b)

B) CONCEPTUALISING

Diagram 1 Diagram 1(a) Diagram 1(b)

- Always compare the two diagrams.

- Ensure how many comparisons.- Always compare the first diagram to the second diagram.

- Write a relationship according to the comparisons.

- State a physics concept, principle or law.

Diagram 1(a) and 1(b) show the level of water when an empty containerand a filled container is put into the beaker.

Using diagram 1(a) and 1(b), compare the total weight of container, volume of displaced water and the weight of displaced water.

B) CONCEPTUALISING

Diagram 1 Diagram 1(a) Diagram 1(b)

- Total weight of container in diagram 1(a) is smaller than in diagram 1(b)

- Volume of displaced water in diagram 1(a) is smaller than in diagram 1(b)

- Weight of displaced water in diagram 1(a) is smaller than in diagram 1(b)

B) CONCEPTUALISING

Relate the total weight of the container and the weight of displaced water to deduce one physics principle.

- The total weight of container increase, the weight of displaced water increase

- The related physics principle is Archimedes’ principle

C) PROBLEM SOLVING

As a participant in “Save The Earth” project, you are assigned to design a house which can consume lesselectrical energy. [10 marks]

Design Explanation

Use material that has highspecific heat capacity

To avoid the house from hightemperature.

Make ventilation holes To allow the hot air flows out from the house

Lay aluminium sheet below theroof.

To reflect the heat from the sun

Use ventilator on the roof To remove the trapped hot air inthe roof.

Make few part of the wall using semi transparent glass

To allow light ray to brighten thehouse.

D) DECISION MAKING

Explain the suitability of the characteristics of a effective transformer.

Determine the most effective transformer and give reason for your choice. [10 marks]

Transformer Material ofCore

Diameter ofwire

Resistivity of wire

P

Q

R

S

Soft iron

Soft iron

Hard iron

Hard iron

Type ofCore

Solid

Solid

Laminated

Laminated Large

Large

Small

Small

Low

Low

High

High

D) DECISION MAKING

2) Explain each characteristic. Give reason

3) DO NOT compare between transformers.

1) DO NOT choose the transformer first.

4) Choose the MOST suitable transformer.

5) Write down its characteristics.

D) DECISION MAKING

Characteristic Explanation

Material of the core must be asoft iron.

To reduce the effect of magnetisation.

Type of the core must be a laminated.

To reduce the effect of eddycurrent.

Diameter of wire must be large. To reduce the resistance and thetemperature.

Resistivity of the wire must be low.

To reduce the temperature in thewire.

Explain the suitability of the characteristics of a effective transformer.

Determine the most effective transformer and give reason for your choice. [10 marks]

The most effective transformer is S because the material of core is soft iron,

type of core is laminated, diameter of wire is large and resistivity of wire is

low.