Page 55 - كتاب تاسع فيزياء الفصل 2 تفاعلي. هويدا محمود

zi a z5 0-a c>Va ¿ O5 a W>a ¿ ² x3yVa

VgC0 ± (ž-›ž ^8/ ±’ E4Û M± X2K ` ÓR Э C;;8: FO F 2 ân_ZUÐ
G= –³R ú 8: ± E PK : ± E
P4 ± C< ; d ± ³»b09 E= Š±
1 ân_ZUÐ
:³»b0 ± Ðb8
oGz^TÐ ‰d^= †gS o^ö HúÐ ‚\¬ X ‹gö —w ¿-¼¿ ‰bYTÐ
.(E b97 F = ’ E P 4 ¦ oGz^TÐ ‹g< (O) Š–›TÐ „“w êm–?úÐ ÚÉ |g—b= ŽcK
ow|wza= ÒÚÉ o›=meTÐ ÒڍZTÐ ëb=í (F) ÒÚj—TÐí
.(_ ± ` R ­’ ³R K 8 ¦ †cTÐ ŽTÎ ‹gKó m^YTÐ zö X n›w ºÒڍZTÐ „RX Øm›wü

._ ± ` E
P4 ± ` P4 ­ ¦ mfgQ ëm^Ima™w o\ah ŽTÎ ‹g^ó \ö a™dTÐ ‹g\¬ TÐ

.(E=7=7 F = ’ E R P7 ¦

E
P ϱP
C ²C ` E 6j ´Ø ­R ±º¯ ] Û ­ d;4 ±Q
d ± E 60 ± û9 C<= ¯ R3; d ± ³»b0 ± Ðb8 –³R ú 8

.C ®R7

R Û Q E PK : ± E
P4 ± C< bÛ 8 d ± ³»b0 ± VgC0

S R ` R 4 ÔQ ± ÃC4/ ± ÐA –E4Û ­ X2K _
» P; ³»b0 ± Îb C< a b; ± D d ± VgC0 ± W4 ÍC;
.R 8; „ E
P4 ± d ± E R ± d6 .E PK : ± E
P4 ± Î ` ÐbK 8 d ±
` ±RÕ = P4 ­ _ ± Ðb8 –œ-›ž ³»b0 ± C< hÛ b
E=:9 ´C 920
:³»b0 ± VgC0 Ðb8 Ò –³»@ ± ` E
P4 ±
C<; b8 `8: „ ³»bj :Virtual image E R P7 ± ³»b0 ±
.E C c9 .(D7 c9 C
Õ ­»’ E b97 ¦

E9
­ .(_ ± ` R5j­’ ³R5K 0 ¦

©E R P7 ± ³»b0 ±Ò E=7=7 ± ³»b0 ± `= ÌR6 ± C -›ž ._ ± ` E
P4 ± c ¯ ²R ­ ¦
ž-›ž
¹»±b ± ž-›ž ^8/ ± d E4Û M± X2K c ¯ R3 ± .E=7=7 ¦
F bÛ 8 d ± ³»b0 ± Э X2Û :Ù ± `=Û û= .C7Õ C
Ÿ-›ž
c9 E7=7 X7 «b1 ± ÐM –E=7=7 ³»b0 ± Я Îb7;
©E P 4 ³»bj E PK E
P E2
±b -›ž C Õ ¹C ÒP «b1 ± ÐC ±º¯ `8 .³»b0 ± ` b8 E C/ ±
.E R P7 ³»b0 ± Я Îb7 C<;= –E
P4 ± R ³»b0 ± `
H ; Э ];8: û= .ž-›ž ^8/ ± c ¯ R3 ±
E
P4 ± C< bÛ d ± ³»b0 ± Э E4Û M± X2K ` .C< Û » Ò­ E
P4 ± E C:
c9 ³»b0 ± _ P: 4 Ò

©E R P7 ³»bj ³R ú 8: ± E PK : ± E
P4 ± ÏPØ Ù C P; û9 Zhb ± Э R=
_ ± Ðb8 –ž-›ž ^8/ ± d C; ­» C:8 .³R ú 8 E
P4
_ ZhÚ Ò .(5 cm) E PK E
P4 Ô»@ ± P4Ù ± –³»b0 ± Zhb ¹C ˆÒ .³»@ ±Ò E
P4 ± `= C Õ bhb
.»b : ± c9 E
P4 ± S R ` (3 cm) P4Ù c9 E4Û ­ ^7 ; „ –E7=7 ± d –`8 .E42ú 7 C Õ b2 _
R
Э ] º ` H ; .´±»C : ± ]9 Îb c9 «b1 ±
.E C ± ÑQ ^ Û : E4K ‡ C7Õ = ¹ C2Õ 2K _
»± ˜­ c9 C< C7 ± Z=2 „ C; ­Ò ¥C ÕÛ R P7 F bK 8 P ³»b0 ±
P4Ù P P (­’ d E4Û M± X2K ÏP
± ˜²
.E C/ ± c ¯ ^0 S Û R «bh ¹b Ò ÏP4 –E C
.E
P4 ± C< Ø98Û d ± E R P7 ± ³»b0 ±
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