* 0020229766801 *

Cambridge Assessment
International Education

Cambridge IGCSE"
CANDIDATE
NAME

CENTRE CANDIDATE
NUMBER NUMBER

PHYSICS 0625/62

Paper 6 Alternative to Practical October/November 2024

1 hour

You must answer on the question paper.

No additional materials are needed.

INSTRUCTIONS
Answer all questions.
Use ablack or dark blue pen. You may use an HB pencil for any diagrams or graphs.
Write your name, centre number and candidate nurmber in the boxes at the top of the page.
Write your answer to each question in the space provided.
Do not use an erasable pen or correction fluid.
Do not write on any bar codes.
You may use a calculator.
Youshould show all your working and use appropriate units.

INFORMATION
The total mark for this paper is 40.
The number of marks for each question or part question is shown in brackets [ 1.

This document has 12 pages.

DC (WWIFC) 338552/3
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THIS
1 Fig. 1.1 represents a stack of glass microscope slides. IN
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stack of glass microscope slides
NOT
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Fig. 1.1 (not to scale)
IN
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Astudent takes measurements from a stack of glass microscope slides in order to estimate the
number of slides in the stack.
NOT
The sides of the stack have been covered with tape so that the student cannot count the number DO
of slides in the stack.

Fig. 1.2 shows side views of the taped stack of slides given to the student. This figure has been
drawn at full scale. MAR

stack of glass
microscope slides THI
.cOvered with tape IN
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side view NOT

side view
DO
Fig. 1.2

(a) Using Fig. 1.2, measure the length l, the width w and the height h of the covered stack of
slides in centimetres to the nearest millimetre. MA
TH
IN
cm

W= cm

h= cm

(b) (i) The student uses a balance to measure the mass M of the cOvered stack of slides.

cOvered stack of glass

microscope slides Lbalance
57.87g

Fig. 1.3
Write down the mass Mof the covered slides to the nearest 0.1g.
M=
L
g [1]

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3
THIS

IN (i) Calculate the density pof the glass. Use your results from (a) and (b)(i) and the equation
WRITE shown.
M
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Give the unit for your answer.

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unit =
THIS (2]
IN (c) The teacher writes down the mass m and the thickness t of a single microscope slide on a
WRITE
piece of card,as shown in Fig. 1.4.
NOT
thickness of asingle slide t 0.11cm
DO
mass of a single slide m = 4.2 g

MARGIN Fig. 1.4

() Use your answer to (b)(i) and information from the card in Fig. 1.4 to estimate the number
THIS of microscope slides N, in the covered stack.
IN
WRITE
N [2]
NOT
(iü) Use your answer to (a) and information from the card in Fig. 1.4 to obtain another
DO estimate of the number of microscope slides N, in the covered stack.

N, = [1]
MARGIN
(d) Two quantities can be considered to be equal within the limits of experimental accuracy if
their values are within 10% of each other.
THIS
IN State whether your values of N, and N, from (c\i) and (c)(i) can be considered equal.
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Support your statement with a calculation.
NOT
calculation
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THIS (e) Suggest one reason why the estimated values of Nare different.
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