1974-05-07 — Page 23

REF

a. 10 cm behind the mirror. d. "cannot be determined begaune:

the focal length of the

concave micror is not given. 8. a virtual image is formed.

CITY

目播育教,其三第張六第日六十月四年賨甲夏

WAH KID YAT PO

報日僑華

河橋

4.0

Parar after 11 (760) (-1)

=

(1874 中學會考試題預習專機。

整道書院主集

數學科(甲)

15-)

2. sin b.com

c. tan d. sec.

́e. coreo

四期解答

-

Minifix = x

*******

100x = 9x7

1874 中學會考試題預習專欄

瑩道睿院主稿、

The critical angle of substance

its refractive index 19

What is the minimum. length of the mirror in which a mad 8 tall can see, the whole himself ?

a. 8 ft.

atartay

b. 16 ft.

物理科(廿五)

:容耀榮

c. 4 ft.

PHYSICS (25):

Ansvets for last week

d. 12 ft.

e. cannot be determined because:

the height of the eye level de not given.

7. If a yellow filter glans is

viewed against a red light, would appear

二期星

日七月五年四七九一层公年三十六國民章中

Bost important, as they are all im- bortant. Suffice to say that she is An intergral part of Parliament, the

fountain of justice," the Head of state, the head of the. Arnaḍ forosa, The Head of the Commonwealth, the -- Fountain of. Koronel and last but not

oast, a pacial figuro,·

As an integral part of Parliament, she opens and closer ita sessions. with poap and ceremony. She may, on The advice of Prime Minister, dissol- Parliament before its life-time of 5 years in un

She is the fountain of Justice" because judges and magistrates are appointed by her. She has also the right to remove Supreme Court judges. on an application by both Houses of

Parliament; She gives the final assent to bills before they become. lawa, and all prosecutions are carr- ied out in her name.

Sbe 18. the Hand of Stata hønarisa

in the external arrairs and foreign:: relations of the United Kingdom, she is her spokesman. Heads of States from various countries pay special

United Kingdom and are ner, guests of honour. In law, she is the supreme · authority, but in actual practice, she allows her government to be ad- ministered by the Prima Minimḥ

Fung 18 the Head or the Armed Forces because she in; the Commander-in-Chier of the Army, Navy and Air Force in nemo.. In practice, her appointed Fofficers exercise direct command over

the thraa: servicen.

Sa. Growth is the process of permane

ent enlargement by means of which a cell, an organ or an organien reach its "full" or maximum size.

b. The conditions essential for con-

tinual growth of an organism are

(1) adequate supply of suitable⠀

foods (11) presence of essential hormones.

in the cytonlaam

(111) Dell activity and expenditure

of energy must not be excessive (iv) buitability of external enviro-

nment.

c. The apparatus used consisted of:

an upright wooden frame to which is attached a light wood-levar with, inequal arms working on a horizontal pivot, a vertical,

graduated cardboard are is atta-. ohed to the frame so that when the lover' moves; its pointer of the long By travels around the are which 18. so graduated: that

its divisions record the movement of the short arm, Copper wire is Boiled round the short arm to

counterprise,the long army Thia apparatus is "known' se an Buxang- Roter,

x=-3, y=x

_2A}[] b'day=ab

bX A (do; yo) #9 - $12

Row 32PA XF JR I Sq

Coz (I algo I ble)

135 2-XV #y (10, Y.)

By Jazz y = 2 x

It is od ta'yo y se

Y = - w xv

串かつ誘解答

・

な

T] = {k+1}{}£+2} j£+3}

ATK 1k Rm £;33

*(n+1)

Problems

1. A man can see an object in a;

plane mirror, becausei

a. a virtual image is formed in

front of the mirror.

b. a real-lasge is formed on the

reting of the eye.

n. a virtuál fange is formed on

the retina.

d. a real image is formed behind

the plane mirror.

e. an upright image is formed on

the retina.

2. Tie sound varés vill band

other if they ares

P. of the same frequency

180 out of phase. R. be. 90 out of phase.

S. of the same amplitude.

a. P. and 2 only.

b. P. and 8 only.

c. all of them.

4. P, Q and T only.

e. some other solutions.

The sharpness of a pinhole camera can be improved by

a, black

b. orange. C.green. d. white e. yellow.

8. A tuning fork is in resonance

with a sloped air column of 4in long. If the velocity of sound is 1120 ft./sec., the frequen- cy of the fork 18

a. 840 c.p.3.

c. 210 c.p.8.

1120

【 1974 中學會考試題預習專機 坚道音院主播

She is the Head of the Commonwealth for it is the queen who binds the. units of tha: Commonwealth. Countries that have gained independence like Singapore have their own legislaturés, but they prefer to remain, wider the;

Crown. The queen unites the loyalty. and brotherhood of all nations within the Commonwealth, a unity, which re- noves national barriers caused by religion and race,

She is the "Fountain of Honour because it is the queen who confers tities and honoura ‘on her injecto in recognition of their accomplishments and services të her government and the society. This way of honouring

great men and women ansuron, that the standard of service and accomplish- ments is maintained and raised.

The Queen 18 a Social, figure," because she le interested in the

STRA#T**(**) *** Livalihood of her subjects. She en-

K. P. A.

-As thin Is the concluding lesson, by way of questions and answera, in this column, sinsi at giving the az“. amining candidates a general knowled- ge of Economic theory, and principles. and their applications, and a working knowledge of government and current public affairo, "it la fitting and

proper to remind the candidates, that

P. enlarging the pinhole so that they must rely quite a lot on their: “

Lore light can enter..

4. reducing the size of the

pinhole..

R. moving the object closer to

the camera.

3. Moving the object farther

away from the camera.

解

(P + d ) ( F + x^)x + p2)

ap q

= [(x+(3 + 1) = d(αß+p+++α)]

[(apra 1+ (3:1)2 -2(x+ß+ Dag)

I anqofil to Y=3

[(αp+at+1+)2 -2(x+p+242)

~(p))2

> \4-2) (1 21213) · { = -31.

• α(p++)+((7++)

+1(x+7)

P and R only.

b. P and S only.

c. P only.

diq only.

• Q and S only.

(ax) (the)

A concave mirror of radius of ourvature 30 cm. is placed: 20 cm in front of the mirror which is perpendicular to the principal axis of the mirror. A small object is placed on the

aris 10 on in front of the mirror. The position of the final image after two feflect: -8, first from the plane mirror and then from the concave mirror is:

side by side with tha object. 5 am in front of the mirror.

common sense as well as their knowle igs of this subject to tackle they questiona They must realize that a question pertaining to a certain. imam he may be framed in a mimbar of ways particularly in questions involing The application of a principle or principles,

Candidates should, first of all, read a quiestión carefully. so se to really understand what it is, because candidates very often will find m question which, they have answareð Dorreatly earlier on and should be

able to get full marks, if they unde rstand the question" and recognitá ths' question, and yet boonuse it in frame" ad in a way different from the questTM ion which he had attempted earlier on, he fails to recognise the quast- ion and gives it un Ceaan like this

þf course do not happen very often, but they do happen,, and candidates should therefore take dane that they He net drop 'into these pitfalls.

Funstión,

What are the important functions of the Queen T

Knswer,

The Queen functions in many laport- kat ways. · It is difficult to pin- boint which of her fmotiona is the

天夜狷八册,下新一分分。 氣情分批交分。

電話的分分十一路

陽我懷

courages her subjects in their work and liạ; trying in as many ways as yo- guïble to, keep in contact with her. Deople, by way of making speeches in

public gatheringe, by visiting fact- ories; hospitals and other organizat- Long, She makes her presence felt ir Society and sets an example in Social affairs,

1974 中學會考試題預習專欄

生物科(課程で)(

26

ion Mestions!«

68, Define the term growth,

b. What are the aonditions essantial

for growth of an organi.am? Describe an experiment to measure the rate of growth of shoot;

7a. Define the following terms

(1) Heredity (1)Genetics

(edit) (1v) '(7)

Genotype Phenotype

Homozygous Heterozygous

b. When a tyčmid black pig oroman

with a white pig, what would the genotype and phenotype of the offsprings be?

Explanation ***

pian

As the shout grows the pointer Dovna downwards

If a series of readings are taken over a fixed period, the rate of growth may be istermind.

78(1)

Heredity is the procese by which heritable charactern are transmitted from parent toʻ

(1) offspring study of hari-

table characters and theirs. -manner of tradenission fron

zenaration to generation.

(iii) Chanically, genes are made of

deoxyribose, micleic acid (INA) They are factors controlling the formation development of a partibular characteristic, (and sro Zound alone "the chro- manomas of every living cell,

(iv). The genotype is the gene con-

tant or, genetic structure of an individual;

(v) The phenotype is the charact

era"which appeared inján m

(vi) An individual carries genes in pairs. If the two partnera or alleles of a pair of genes are similar de controlling or po- esassing the same characteris- tia. it is known as. homozygous

If the alleles are disaludlar, it is known as heterozygous,"

b. First, we must assume that the

hybrid black pig possess a rese- essive colour gene of cohite, an that in an allels, black dominat- es over white. Thus the genotyp of the hybrid wold be Black/ white while the white pig would “

·be white white,

Let B. be black (dominaxit

"W, be white

b. be black":"(

w beɛwhita' (recessive)

(BS)

[Hybrid black

Pure whitel

The genotype of the offprings would |-ba=50% hybrid black bearing white

recessive, and 50% pure white.

The phenotype of the offsprings would be 50% black- and 50% white,

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