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Physics Form 2 Question Paper

Physics Form 2

Course:Secondary Level

Exam Year:2007

Physics Form 2.

SECTION A (25 MARKS)

1. State whether a magnetic field is a scalar or vector quantity and explain (2mks)

2. State the domain theory of magnetism (2mks)

3. Define moment of force (2mks)

4. A half metre rule balances at the 10cm mark when a weight of 5N is hang at the 2cm mark. What is the weight of the rule (3cm)

5. Draw the sleeve and thimble scale of a micrometer screw gauge that shows a reading of 5.15mm (2mks)

6. Write down each of the following numbers in standard form (3mks)

i. 82006

ii. 0.004038

iii. 2502000

7. Describe how you can measure the volume of an oil drop in the laboratory (3mks)

8. How would you use the volume in question 7 above to estimate the size of a molecule? (5mks)

9. Distinguish between cohesion and adhesion (2mks)

10. What is centripetal force (1mks)

SECTION B (55 MARKS)

11 (a) Briefly outline how a hydraulic lift works (4mks)

b. A lifting force of 2000N acts on the large piston of area 2500cm2

i. What is the fluid pressure (3mks)

ii. Force on the small piston is 1/50 of the force on the big piston. What is the area of the small piston (4mks)

12. How can you measure the density of a solid using a density bottle?

a. List measurements to be taken (4mks)

b. Volume of solid (2mks)

c. Density of solid (3mks)

13. (a) Distinguish between solid and liquid states of matter in terms of intermolecular forces (1mks)

b. In an experiment to estimate the diameter of an oil molecule, an oil drop of diameter 0.05cm spreads over a circular patch whose diameter is 20cm. Determine:

i. The volume of the oil drop (2mks)

ii. The area of the patch covered by the oil (2mks)

iii. The diameter of the oil molecule (3mks)

14. (i) Define density (1mk)

ii. You are provided with a lead-aluminium allow of mass 98.4g. The allow contains 6cm cubic of lead. Given that the density of aluminium is 2.7g/cm3 and the density of lead is 11.3g/cm3, calculate the density of the alloy (5mks)

iii. State the principle of moments (2mks)

iv. State two factors that affect the turning effect of a force (2mks)

15 (a) Draw a simple labelled electric circuit (3mks)

b. Draw a labeled diagram of a single charged lead acid accumulator cell (4mks)

c. Describe how to charge a metal sphere negative by induction (4mks)

d. State two uses of a gold leaf electroscope (2mks)

Physics Form 2 Question Paper

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