Sunday, November 13, 2011

Combined Science Physics MCQ Topics to revise

Dear combined physics students,

Please go through these topics well as they were not tested in your paper 2.

-Unit 1 Measurements (Vernier calipers, micrometers, period of pendulum)

-Unit 2: Kinematics (Distance time graph, vector & scalar, vector 90 degree)

-Unit 3: Free body diagram drawing (naming of forces on arrows)

-Unit 4: Calculate weight (w=mg), remember density is the SAME for the same material even if there are different sizes

-Unit 5: Calculate moment (M=Fxd)

-Unit 6: Calculate KE, calculate Power (P=E/t or P = WD/t)

-Unit 7: Brownian motion

-Unit 8: Transfer of heat : conduction, radiation, differences between evaporation and boiling

-Unit 10: Waves (calculate frequency, period, wavelength from graph, find amplitude, wavespeed) definition of longitudinal and transverse waves

Unit 11: Light (all reflection questions.)
All refractive index calculations

-Unit 12: Sound (echo calculations), louder , higher pitch sound wave pattern

-Unit 13: Static electricity

-Unit 15,16 circuit calculations for series and combo circuits.

-Unit 17: Earth wire(yellow-green), live wire (brown), neutral wire (blue). Switch position.

-Unit 18:Magnetism & Electromagnetism

Thursday, November 10, 2011

Combined Physics MCQ Practice

Dear Combined Physics students,

Below are more MCQ school papers for you to practice. Study hard! dont take for granted! Its worth 40 Marks! Can pull up alot! All the best! Any questions, please dont sms me (as my hp sms is down), call or whatsapp me.

Set 1 MCQ paper + answer


Set 2 MCQ Paper
+ answer

Remember to bring Pencil and eraser! MCQ paper dont use pen. the machine can't read pen ink.
All the best for coming Monday 2 pm!! :)

Wednesday, November 9, 2011

Pure Physics MCQ topics to practice

Dear Pure Physics seniors,

Below are the topics that have not been tested in Paper 2, so possibility of them being tested in MCQ tomorrow will be higher. BUT do not ignore the other formulas or concepts that have been tested, they can still repeat in MCQ. All the best! Do rest early tonight as its an early paper. :)

Questions on:

Topic 1: Measurement

-vernier calipers
-micrometer screw gauge
-periodic calculation

Topic 2: Kinematics
- acceleration calculation
- speed time graph calculation
-velocity & speed comparison
-vector & scalar
-vector diagram (IMPT!!!!)

Topic 3: Dynamics
-F = ma calculation

Topic 4: Mass, weight, density
-w=mg calculation
-Density calculation

Topic 6: Pressure
-P=F/A calculation

Topic 8: Kinetic theory
-Brownian motion explanation
-Solid, liquid, gas properties

Topic 9: Transfer of thermal energy
-Conduction, convection & radiation

Topic 10: Temperature
-thermometer calculation

Topic 11: Thermal properties of matter
-latent heat calculation
-Melting, boiling, freezing curve

Topic 12: Waves
-Wave patterns
-Transverse wave properties

Topic 13: Light

-Light critical angle explanation & calculation
-Light Lenses (drawing, uses, properties of images)

Topic 15: Sound
-Sound echo calculation

Topic 19: Practical electricity
-Fuse
-Earth wire
-Live wire
-neutral wire
-cost of electricity calculation
-E=VIT calculation
-Circuit breaker explanation

Topic 21 : Electromagnetism
-transformer calculation

Love,
Ms Yvonne :)

Pure Physics MCQ Papers

Dear Pure Physics Seniors,

Below are some school MCQ Paper 1 for you to practice. Do memorise all the formulas well. Come find me if you have questions? I will be in school whole day tomorrow. :) Jia you! Last lap!! :))

Set 1 MCQ + Ans


Set 2 MCQ + Ans

Set 3 MCQ + Ans

You can do it!! :)

Tuesday, November 1, 2011

Checklist for Pure Physics & Combined Physics exam tml

Dear all physics students,

Below is the checklist of things to bring for tomorrow paper:
-Set-square!!!! (impt for drawing vector!)
-Protractor!!!! (Impt for measuring angle in vector) if you dont know vector, do see the vector clip i posted.
-ruler
-ERASER
-Pencil
-Pencil Lead
-CALCULATOR
-Pen
-Entry proof
-NRIC/Passport

All the best!!! :)

Combined Physics (Intensive revision PART 2)

Dear Combined Physics students,

Pls find attached the intensive notes for:

-Magnetism and electromagnetism

-Waves, sound

Do read through them, especially magnetism & electromagnetism, electricity. Do revise work, energy, power notes too.
Jia you!!!
:)

Pure Physics (Magnetism & Electromagnetic induction)

Dear Pure physics students,

Pls see attached the
-magnetism and electromagnetism induction revision notes

-Waves, sound revision notes.

Do revise them, and electricity notes. :)

Pure Physics Mock Paper 2

Dear Pure physics this is the last mock paper 2 for you to try. Answers attached. Jia you!

Set 4 Pure Physics P2 + Answer

How to draw vector diagram?

Hi Combined and Pure Physics students,

Please do look at this if you need help in drawing or solving vector diagram questions.
Choose a scale that gives nice whole no. and enables you to redraw the given lines as BIG as possible.

Combined Physics School Paper 2

Dear Combined Physics students,

Below is another set of school paper 2 for you to try. Do memorize all formulas before attempting. Knowing your formulas, SI units is KEY!


Have fun! All the best! Bring your CALCULATOR, Pencil, Eraser, Protractor (Vector diagram), Ruler.

Saturday, October 29, 2011

Pure Physics School Papers

Dear Pure Physics students,

Below are the links to school papers + answers for your practice.

School Papers Practice

Set 1 Pure Physics P2 + Answer

Set 2 Pure Physics P2 + Answer

Set 3 Pure Physics P2 + Answer

Have Fun! :)

Combined Physics Intensive Revision Notes

Intensive Revision Notes (With Answers)

Scroll down to the bottom of each file to see the answers.

Wk 1
Electricity


Wk 2
Waves, EM waves, Sound

Combined Physics School Papers (Intensive Revision)

Dear Combined Physics Students,

Below are the links to download the school papers I given out during the intensive revision. Included are the answers.

Intensive Revision School Papers

Wk 1 Paper 1 +Answer

Wk 2 Paper 2 Wk2 Paper 2 Answer


More School Papers Practice

Set 1 Paper 2 + Answer

Combined Physics Definition & Formula Lists

Dear Combined Science Physics students,

Pls see attached below the list of all the definition and formulas you need to know. In case you lost them.:)

Combined Physics Definition List

Combined Physics Formula list

Wednesday, October 19, 2011

Physics Science Practical Part 2

Physics Practical Questions and Answers (Commonly asked)

1) Light Experiment (Lenses)
QN. Name an error in the experiment
Ans: Uncertainty in obtaining the sharpest image.

2) Light Experiment (Glass block or mirror with the pins)
QN. Name an error in the experiment
Ans: Difficulty in alignment of the pins

3) Electricity Experiment
QN. Name an error in the experiment
Ans: Overheating of the wires affecting the resistance of the circuit.

4) Oscillating Experiment or Experiment that has swinging objects
QN. Name an error in the experiment
Ans: Wobbling of the oscillating system/object

5) Moment Experiment
QN. Name an error in the experiment
Ans: Difficulty in getting the ruler/beam to be parallel to bench

6) Other types of Experiment that involve fast reaction
QN. Name an error in the experiment
Ans: Inconsistent human reaction time.


Physics Science Practical Short recap:

Physics Science Practical Short recap:

1) Every instrument reading MUST record to the decimal place of the accuracy of the instrument.

Example:
Metre rule: 15 cm record as 15.0 cm or 0.150 m. NOT 15 cm or 0.15 m.

Stop-watch: 1:20:00 s record as 80.00 s. NOT 1.20 s or 1.20.00 s or 80 s.

Ammeter: (Refer below) Record as decimal place of 0.02 A. . NOT 0.1 A.


















Voltmeter: (Refer below) Record as decimal place of 0.1 V. NOT as 1V.


















2) DON'T write SI units in your table readings.
It makes your readings look like it has another number.

3) DO record all your readings to the SAME no. of decimal places in EACH column.

4) Do READ all the way to the end of the experiment to avoid redrawing your graph.

5) Do start both axes from ZERO if the question wants a Y-intercept reading.
-If don't need Y-intercept, you can start with any no.
-NEVER use ODD scale. eg. 0.3, 0.6, 0.9 or 0.133, 0.667....

6) Do choose a big scale for your graph.
(Your 1st point to the last point must cover >70% of graph paper, not your line)

7) Do write the title of your graph on the top of your graph paper.
(eg. Graph of A against B)

8) Do label your axes correctly AND with the SI units.
Examples:
- Graph of A against B. Means A = y-axis, B = x-axis
-Graph of W as horizontal axis and P as Vertical axis. Means W = x-axis, P = y-axis

9) Do draw a BEST-FIT Line or BEST-FIT curve. The question will tell you!
Best-fit means go in between your points.

10) Do draw a BIG gradient triangle AND label your coordinates for straight line graph.

11) DON'T have HAIRY lines.

12) Do use PENCIL.
Marks are penalized for graph drawn in pen.

13) DO draw a tangent to find gradient at a point.
This is for best-fit curve.

14) DO record all calculated readings AFTER the table recording in 3 significant figures.

15) DO TIME yourself to move onto the next experiment after 45 mins.
Set an alarm.

16) DO finish at least the graph.

17) DO read the instructions carefully and follow step-by-step.
Bring highlighters to highlight the important points.

Thats all guys, all the best tomorrow! :)

Monday, August 15, 2011

Different Type of Images formed by Convex Lens

Dear Combined Science (Physics) students, if you missed out on the Lenses lesson, this is a short recap video on the different images formed by a convex lens. Due to time constraint, its recorded in a very fast pace, you may want to play and pause to study the animation to slow it down.

Answer for Combined Science Physics (Practical Electricity, Magnestism, Electromagnetis) Common Test

Dear Combined Science Physics students,

As per request, below is the answer to your Practical Electricity, Magnetism & Electromagnetism CA test. All the best for your Major Test tomorrow! I am proud of your hardwork! :)

Section A MCQ
1. C 10. B
2. B 11. C
3. D 12. C
4. B 13. D

5. B 14. A
6. B 15. D
7. B 16. B
8. A 17. A
9. B 18. D

Section B Short Questions
1a.











1b.

600 W = 0.6 kW [1M]

E = 0.6 x 5

= 3kWh [1M]


2a.







Diagram -1M

1. Set up the experiment as shown in the diagram. [1/2 M]

2. Insert the steel bar into the solenoid. [1/2 M]

3. Conncect the solenoid to DC (Direct Current) Supply. [1M]

4. The steel will be magnetised.

2b.


Iron can be easily magnetised and easily demagnetised. [1M]

Steel is difficult to magnetised and difficult to demagnetised. [1M]

Steel is not used as a core of a circuit breaker because it cannot

be demagnetised easily when the current changes direction of switched off. [1M]



3a. When S is closed, both metal rods are magnetized with the same polarity. [1M]

Therefore the 2 metal rods repel each other since like poles repel. [1M]


3b. The iron rod becomes demagnetized [1M] while the steel rod remains magnetized.
[1M]. The steel rod induces magnetism in the iron rod therefore due to the
attractive forces between the rods, the rods move towards each other. [1M]

3c.
The rod that attracts the pins is STEEL. [1] Because steel retains its magnetism while iron loses its magnetism[1]

4a

1 ting is heard. [1M]

When the circuit is closed, current flows through the solenoid [1/2M] and it becomes an electromagnet. [1/2M]

Hence, the electromagnet attracts the soft iron towards it [1/2M] and caused the hammer to strike gong 1 [1/2M]

4b. The hammer will hit gong 1 faster and louder. [1/2]. When the circuit is closed,
more current
flows through the solenoid [1/2M] and it magnetized the iron faster. [1/2M]. Hence, the electromagnet attracts the soft iron towards it and caused the hammer to strike gong 1 once faster. [1/2M]

5. [Refer to notes]

[1M – for drawing attraction field lines]

[1M – for drawing the rest of field lines]

[-1/2 M for wrong direction]

[-1/2 M for overlapping field lines]

6ai. Upwards [1M]

aii. According to Fleming’s Left Hand Rule, [1M] the force exerted on the wire is perpendicular [1/2M] to the direction of magnetic field and direction of current. [1/2M]

aiii. By Fleming’s Left Hand Rule, [1M] the side AB will move downwards. [1M]