頁二第張七第 日十三月三年巳丁蟹复 WAH KIU YAT PO
報日僑華
二期星
育敎僑華
九七七年香港中學會
HONG KONG CERTIFICATE OF I
物理
試卷一
一不期三十分鐘完辔
打针八時三十分意上午十時点
本然要必須用屮文作答
EDUCATION EXAMINATION, 1977.
PHYSICS
PAPER I
One hour and thirty minutes
8.30 am-10.00a.m.
This paper must be answered.in Chinese
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日七十月五年七七九一圈公年六十六國民臻中 青堡豐
Answer SDX questi andy, chooung TWO spation from each of the Sections A. Band C.
Mau:erratical tables and graph paper will be provided.
Ramindor
• All answers to preoblema should be given in 9,1. ismits. Mark will be destacled if the undis of the knower are not correctly staled.
ABBREVIATIONS
(6)
Figure
Copy figure&o your wiwes book and clearly mark the positions of node and antmode. What is the wavelength of this stationary weke ↑
A vibrating tuning fork in placed at the mouth of a closed tube and resonance colous place at Bon) fundamental freqátncy of the tuba. Ondŷ Rigore 7 into your savwer book and bidicat by mywj. the direts anal relative amplitude of the vibrations of air coolecules at A; ♬ and C.
meire
centimetre
withing tuning fork
kilogram
Joule
Figure
secund
13ach>>
acceleration due to gravity (10 m ;”2 )
(3)
centimetre of mercury
segree Celsins
Two closed habes of different lengths are pur ciom together with their ópan ends at the same level. When all blown arrow their mouths, a difference of $ 19% car be detected in their fundamentaŽ frequencies. If the length of the longer tube is 0.3 ms and the velocity of sound, ann air as 330°m x ̈1 calculate the length of the shorter tube. ¡Neglect end correctivma).
anspeic
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Actum experiment is set up and shown in figure sa find the relationship between the pressure suit he nemperature of a fixed mass of gu kept | constant volunte
milliampere
製邋度念碼。
SECTION A
electromotive forze
MECHANICS, AND PROPERTIES OF MATTER
(Attempt TWO questions from this section)
30
100
高豐是cm) -3
10-
16
25
(d
犴鄮傒⁂點力獺歌。
专题
解臘(九)、( )、(十一)踄始在網上,
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REKAŹNER + 32 1 8 & 12 M u te beë
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(二)
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| 35 € sant n 200 k
Y之電組波,
在平衡饑,擒ㄚ急裼骙
一点想定
(2分)
一九七七年霾港中學會梦
HONG KONG CERTIFICATE OF EDUCATION EXAMINATION 1977
物理
試卷一
一小時三十分豐
上午八睡三十分蟹上午七時正
本試必须幇夷文件等
PHYSICS
PAPER 1
One hour and thirty minutes
8:30a.m.-10.00 am.
This paper must be answered in English
Filinver
wates
• mercury
A rocket carrying a spaceship ta flywố vertically upwards. After wetzerine, the spaceship dened from the socket. The following graph shows the motion of the spaceship Team the tone of firing.
inclucity
heal
Figure
The atmosphere pause at the time of the expeṛanını la 75 cm Hg. The cell obtaled are in takon
1000
Figure
Find the celestian of the spaceship during the rims intervals
()
50 150 seconds:
Time in arconds
A spaceman of mm 100 kg in the spaceship. Calculije his weight on, ise seat during the interak
40
8 10 30 seconds,
f) 50 1150 zsoinda.
(Take the acceleration due to gravity g ra be 10 ms";
(e)". Cafelate the gezimuin Fatight reached by the spaceshiji.
Suke paskicket vitsuenajer), 1 1 can be seen to be in imarunt, megular motus when viewed Under a spe,
What can you say about the nature of an leom this use"
Moxalate effect of a ne me temperature, in the matin, of the smoke paliwien? Explam Belly:
Temperature in "C
D
30
Effet
in mury
Jewish in con
Plata pressure-temperatuje graphs for the enckoned gas.
10
70
100
25
(b). What conclusion on the relationship between pressure and temperature can you draw from the;
griph
What the unknown umpenture X.
(d) Calculate the plessite coefficient of the pa
(ì maikā
-(2 marks)
(e) Would it be better to pat the themeter in water? Why
SECTION C
MAGNETISM, ELECTRICITY AND ATOMIC PHYSICS
{Attempt TWO questium Cine thin section)
Three metal balli A. B, C suspended by costan threads are in contact. Ris budu ghi cheng to Aas shown in figure 9:
000
sag” nữ vlere ayud as shpwolved in methanol to burn 1000 em' d' solution. 0.001 cm3 of this solutum in gretted onto the surface of wagt The Jumeler of the pauli uď ukcie, acid feined in
Calculze the approximate teigili utan oleic acid molecule treun the above slate,
Lin the three ipes ui equiliðnum of a body under gravay.
Ebị State laws factors which affect the sibling of a vehicle.
(marks)
(2 marks)
The disc of a coifion, thin lamina are as shown in figuer 2..
Figure 4
Figis0
Figaro!!
With it and still in contact and some is removed and lowered slowly into an empty metal can which roles on my trittally uncharged gold-feaf slectroscope as shown in skæres B and Figure 1.
Copyfigures 9, 10 and 11. Into your answer back.
(i) you gure 9. rawh the dakibution of charges on A, B and C.
H the your figures 10 and 11. mark the detribution of charges on C, the can and the electro
acupe. Indicate also the positions of the gold leaf in tạch of the two ca
(5 marks)
(b). Then, and y muyu melted by a redioactive substance Eater into a region of strong magnetic Telo and separate into three beara E, F and G as shown in Figure 12. Identify the bestra F F and fa
· Lead container
K
A
muth large
K
Figure 12
milfield
-intu plane of paper
(c) Avin pile of radioactivé hrundh contains 2017 atoma. The haškľa a thin radioactiva himnuth' l-
5 days. What will be the number af himnoch nioms left after 10 days. 7)
(2 msk
FAUN 2
Copy Agure 2: Intia your answer book ansi math the potion of the centre of mass ut the lamans. Show your construction lines or thepa of siculaiich clearly.
The le fáj now rastu un a small horizontal pop, as shown in Ogure 3. What type of equilibrium dues this system helông, zo? Explain.
{+} A pilviometer of resistance 9 It gives i fuld scale dißlection when a curent of 10 nak page
through it. How would you consent it
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to an arometer reading me | A. inż
to a volimeves raadung!
SECTION
- MIAT, LIGHT, SOUND AND WAYE MOTION
(Aitem! TWO questions from this section).
4. (2)
A way of light travelling in water meets the water wffice at en ange of incidence of 60". The refracter inden of water in 1.33, Copy figure in your answer book and trace the subsequent pot the ray of light.
ci
Figure 4
(2 masks)
An object is placed on the principal axis of a convex menor end 0.5 m from the mixt. The reds of careture of the mirror 1 0,1 m. What are the nature and position of the imaga ?
(5 marks)
Q
(a)
(wk)
匠
Cisco.
A and a
poleviendat sau ad
usboll
plastic pipen
Figure 1.3
Figure 13 shows the main feature of a home-made inattursent for treasuring mument (. Dew way to incrram the absitivity of the instrument le by sung a soft-icon core izeide the frame C, nagest FOUR other ways to increase the sensitivity of this inakken E.
At its upesalmer temperaling, an dem bulh gvintinas 180 3 af vetzgy per secotal salmete}
therul Y.
tok
the curfen though E.
The wave nature of Light can be demonstrated by wing, a ripple task. In the experiment in (6) above, the object and the convex mare can be respectively replaced by a dot water and a
to us down in figura 5 below.
(6) The reabiance of 1 can alus be measured by using a Whestytaste bridge circuit as shown in figure,
14
chuler
Cred
YARYO
del vibrat
Copy figure into you seewer' book. Sketch the pallem of vise reflected warm and indicate the approximate position of the "Gringe"".
5.
i) Aary wave is okleined un astretched string en alsomen to Sgune é
+90
has an
The standard rentalker 3 16 200 12 and -18 as a nabera, a ite sel Bagh 1 m. tell
Ved a negligible internal resmiany. The badge is drakened when CN Q4 Fnm these data find
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the teatume off.
the current pausing sliroogh ¥ when the bekāpe in balanced.
(5 marka
(e) Explain why the values for the rusketaren of. 3′ ohuined in day south) are different.
[2 mark)
ENTY OF PAPER