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Physics
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100% found this document useful (1 vote)
565 views12 pages2019 KCSE Physics Paper 1
Physics
Uploaded by
abdulhakimmohamedmCopyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF or read online on Scribd
/ 12
‘THE KENVA NATIONAL EXAMINATIONS COUNCIL.
Kenya Certificate of Secondary Education
232/1 — PHYSICS —
(THEORY)
Nov. 2019 - 2 hours
Name Index Number
Candidate's Signature Date
Instructions to candidates
(0) Write your name and index number inthe spaces provided above.
(©) Sign and write the dato of examination in the spaces provided above,
(@)_ This paper consists of two sections: A and B.
(a) Answer all the questions in sections A and B Inthe spaces provided.
(6) All working must be clearly shown,
(1) Non-programmabl silent electronic calculators may be used.
(g) This paper consists of 15 printed pages.
Paper 1
(h) Candidates should check the question paper to ascertain that all the pages are printed as
Indicated and that no questions are missing.
() Candkdates should answer the questions in English
For Examiner's Use Only
[eegton | cunedong [Meslay [Cambie]
a m3 25
i 10
15 nu | |
8 16 n
vf on | |
8 2
Total Sore | 0
{© 2019 The Kenya National Examinations Council
22/1
919339,
Turn over SECTION A (25 marks)
Answer all the questions inthis section in the spaces provided.
“A micrometer screw gauge has a —0.03 mm error: State the reading thats observed onthe
instrument when used to measure the diameter of a wire Whose actual diameter is 0.38mm,
(mask
2, Figure 1 shows a defective straw used to suck milk from a glass
Figure t
Iwas observed that upon sucking te straw, milk did mot rise up the straw. Explain this
observation (marks)
Kenya Certificate of Secondary Education, 2019
919339 22 3. State two ways of reducing the sure tension of liquid. marks)
4. Figure? shows around bottomed flask containing a coloured liquid. The lask is ited with 2
capillary tube.
Capillary tube
igure 2
tis observed that on holding the flask with bare hands, the level of the liquid in the capillary
tube intially drops slightly and thn rises, Explain this observation Garis)
Kenya Certfeate of Secondary Eication, 2019
919339 232/1 ‘Turn over 10, Fora fluid flowing at a velocity Vina tube of erss-setional area A, VA = constant, State two
assumptions made in driving this equation. (marks)
1, A.stone of volume 800m? experiences an upthrust of 6.5N when fully immersed in a certain
liquid. Determine the density ofthe liquid. (marks)
12, Figure 5 shows two springs C and D of the same length and equal numberof tums made from
the same wire
© D
Figures
State with a reason which ofthe two springs can suppor a heavier load before staining the
clastic limit, (marks)
Kenya Cerificate of Secondary Education, 2019
919339 2321 7
13, ‘Two boxes E and F of masses 2.0kg and 4.0kg respectively are dragged along a frictionless
surface sing identical forces, State with a reason which box moves witha higher velocity
(@ marks)
Kenya Certificate of Secondary Education, 2019
919339 232 ‘Turn over SECTION B (85 marks)
Answer all the questions inthis section bn the spaces provided.
14, (@)_Astudeots provided with ive 20g masses, a meter rule, spring with a pointer, a stand,
oss and a clamp,
(Inthe space provided, sketch a labelled diagram of the setup that may be used in
‘order to verify Hooke's law using these apparatus, (Garis)
‘State two measurements that should be recorded in order to plo suitable graph
$025 (0 verify Hooke’s law, marks)
(ii) Describe how the measurements made in i) can he used to determine the spring
‘constant, (marks)
'
(©) Abelical spring stretches by 0.6cm when supporting a weight of 40g, Determine the
‘extension when the same spring supports a weight of 65¢. marks)
Kenya Cerificate of Secondary Education, 2019
919339 23011 9
15. (@) Figure 6 shows a bottle top opener being used to open a bottle
Opener
Bottle
Figure 6
Indiate onthe diagram the direction of the load and the effort (marks)
(©) _ State two ways in which an ncn plane can be made to reduce te applet effort when
palling Toad along the plan. (@rmarks)
(©) _Ablock and tackle system has thee pulleys in the upper fixed bls and so pulleys
the lower movable block,
(Draw diagram to show how the system can be se up in oder to if ato and
indeate the postion ofthe load and effort Garis)
(State the velocity rato of the setup. (1 mari
Kenya Certificate of Secondary Education, 2019
919339 22/1 ‘Turn over 10
Gi) In sucha block and tackle system
an effort of 200N is required to lit a load of
GOON. Determine its efficiency.
Gmazks)
16. (2) State the meaning ofthe term “feat capacity.” (1 mark)
(©) State how pressure affects the melting point of substance, (Cmark)
Kenya Certificate of Secondary Education, 2019
919339 2301 (©) Figure 7 shows a setup of apparatus that may be used to measure the specific latent heat
of vaperisation of steam,
Condensed
steam
Figure?
(]) Describe how the mass of condensed steam is determined. mars)
(ii) Other than mass and time, state two other measurements that shouldbe taken