Majority of the candidates attempted this question and had good and useful results. However, a few of the candidates disregarded the instruction to measure do thus, they could not get the desired results.

1. Evaluation of    was wrongly done.

Part (b) (i) was well attempted while the numerical part. (b)(ii) was poorly handled Most candidates substituted wrongly into a wrong formula.
The expected answers are:

1. internal diameter D of beaker measured and recorded to at least 1d.p in cm
2. Initial depth d* of water in the beaker measured and recorded  in

cm to at least 1d.p in cm.

1. Five values of M recorded in gm.
2. Five values of d< measured and recorded to at least 1d.p in cm

and in trend
Trend As M increase di increases

1. Five values of di - do correctly evaluated

1. Composite table showing at least M, dt, and d Candidates are also expected to:
2. plot five points on graph
3. distinguish between the axes
4. chose reasonable scales
5. draw line of best fit
6. evaluate k =4s/nD2

1. State any two of the following precautions in acceptable language.
2. Avoided parallax error in reading the metre rule
3. Avoided splashing of water (Liquid)
4. Avoided object (mass) from touching sides bottom of beaker Metre rule/scale vertically placed

Repeated readings shown on the table

(b) (i) Relative density (R.D) is defined as the ratio of mass ( or weight) of a substance to the mass (weight) of equal volume of water
OR
R D = mass (or weight) of a substance
Mass (or weight) of equal volume of water
OR
R.D = Density of substance Density of water

1. R.D =       Weight in air

Upthrust
     RD    =     2.7
                2.7- 1.2

          =           2.7
                       1.5
           =         1.8