Physics (BV)

ক্যান্টনমেন্ট পাবলিক্ স্কুি এ্যান্ড ক্মিজ, সৈয়দপুর হ ােমেস্ট-১

হেল িঃ দশে

লবষয়িঃ পদার্থ লবজ্ঞান (m„Rbkxj cÖkœ)

mgq: 2 NÈv 35 wgwbU c~Y©gvb : 50

[`ªóe¨: Wvb cv‡ki msL¨v cÖ‡kœi c~Y©gvb ÁvcK| cÖ`Ë DÏxcK¸‡jv g‡bv‡hvM w`‡q co Ges mswkøó cÖkœ¸‡jvi h_vh_ DËi

`vI| †h‡Kv‡bv cuvPwU cÖ‡kœi DËi `vI|]

1| 4 C Ges – 1 C PvR© 1 m `~‡i ivLv Av‡Q|

K. PvR© Kx? 1

L. †c‡Uªvjevnx Uªv‡Ki mv‡_ avZe wkKj Szjv‡bv _v‡K †Kb? 2 M. PvR© `ywUi ga¨eZ©x AvKl©Y ej wbY©q Ki| 3 N. PvR© `ywUi mshy³ †iLvi †Kv_vq B‡jKwUªK wdì k~b¨-

MvwYwZKfv‡e we‡kølY Ki| 4

2| wb‡Pi wPÎwU jÿ Ki Ges cÖkœ¸‡jvi DËi `vI:

Amxg n‡Z +5 C Avavb A Ges B Gi Zwor‡ÿ‡Î Avb‡Z K…ZKvR h_vµ‡g 200 J Ges 300 J|

K. Kzj‡¤^i m~ÎwU wjL| 1

L. ev‡j¦i Mv‡q †jLv 220 V-60 W Gi A_© e¨vL¨v Ki|

M. A হতে5m দূতেক োনবিন্দুতেবিদুুবে বিভি

বনর্ণয় ে। 3

N. A I B †K cwievnx Zvi Øviv hy³ Ki‡j B‡jKUªb cÖev‡ni

w`K MvwYwZKfv‡e e¨vL¨v Ki| 4

3| wb‡Pi wPÎwU jÿ Ki Ges cÖkœ¸‡jvi DËi `vI:

K. myßZvc Kx? 1

L. 1 kWh †K Ry‡j cÖKvk Ki| 2 M. DÏxc‡Ki eZ©bxi Zzj¨‡iva KZ? 3 N. †iv‡ai cwieZ©b bv K‡i eZ©bxwUi †iva¸‡jv Kxfv‡e mvRv‡j ZworcÖevn 2A n‡e? wPÎmn eY©bv Ki| 4 4| wb‡Pi wPÎwU jÿ Ki Ges cÖkœ¸‡jvi DËi `vI:

A wmwjÛv‡ii †ÿÎdj 1 cm² Ges B wmwjÛv‡ii †ÿÎdj 1 m²|

K. Pvc Kv‡K e‡j? 1

L. Avgiv evqygЇj Pvc Abyfe Kwi bv †Kb? 2 M. B wmwjÛv‡ii wc÷‡bi Dci 70 kg f‡ii GKwU e¯‘‡K Zzj‡Z A wc÷‡b Kx cwigvY ej cÖ‡qvM Ki‡Z n‡e? 3 N. A wmwjÛv‡ii wc÷b G cÖhy³ ej A‡cÿv B wmwjÛv‡ii wc÷bwUi Dci cÖhy³ e‡ji gv‡bi Kx cwieZ©b n‡e; we‡kølY

Ki| 4

5| 5 kg f‡ii GKwU e¯‘‡K Lvov Dc‡ii w`‡K wb‡ÿc Kiv n‡jv| m‡e©v”P D”PZvq e¯‘i †gvU kw³ n‡jv 6002.5 J|

K. Kg©`ÿZv Kx? 1

L. 40 Ryj KvR ej‡Z Kx †evS? 2 M. DÏxc‡K D‡jøwLZ e¯‘wU‡K KZ †e‡M wb‡ÿc Kiv n‡qwQj? 3 N. MvwYwZK we‡køl‡Yi gva¨‡g 32.5 m D”PZvq e¯‘wUi MwZkw³ I wefe kw³ wbY©q K‡i †`LvI †h †gvU kw³

aªæeK| 4

6|200 g dzUšÍ cvwbi g‡a¨ 20C ZvcgvÎvi 100 g cvwb wgwkÖZ Kiv n‡jv| cvwbi Av‡cwÿK Zvc 4200 Jkg^–1 K^–1 I eid Mj‡bi Av‡cwÿK myßZvc 3,36,000 Jkg^–1|

K. Av‡cwÿK †iva Kv‡K e‡j? 1

L. ej cÖ‡qvM Ki‡j mKj †ÿ‡Î KvR mgvb nq bv †Kb? 2

M. wgkÖ‡Yi ZvcgvÎv wbY©q Ki| 3

N. H wgkÖ‡Y 300 g eid w`‡j KZUzKz eid AMwjZ Ae¯’vq

_vK‡e Zv e¨vL¨v Ki| 4

7| wb‡Pi wPÎwU jÿ Ki Ges cÖkœ¸‡jvi DËi `vI:

Dc‡ii eZ©bx‡Z R1 = 100 , R2 = R3 = 50 , R4 = 75  Ges E = 6 V †`Iqv Av‡Q|

K. eid we›`y Kv‡K e‡j? 1

L. †Kv‡li Zwo”PvjK kw³ 6V ej‡Z Kx eyS? 2 M. eZ©bxi †gvU Zzj¨ †iva wbY©q Ki| 3 N. eZ©bxi cÖwZwU †iv‡ai ga¨ w`‡q Kx cwigvY we`y¨r cÖevwnZ

n‡”Q-Zv we‡kølY Ki| 4

8|10 kW Ges 5.88 kW ÿgZvi `ywU BwÄb w`‡q GKwU 30 m DuPz evwoi Qv‡` h_vµ‡g 200 kg I 1000 kg cvwb 1 wgwb‡U Zzj‡Z cv‡i|

K. IqvU Kx? 1

L. †Kvb e¯‘i wefe kw³ 50 J ej‡Z Kx eySvq? 2 M. cÖ_g BwÄbwUi jf¨ Kvh©Ki ÿgZv KZ? 3 N. BwÄb `ywUi †KvbwUi Kg©`ÿZv †ewk - we‡kølY Ki| 4

R1

+ –

R₄ R₂ R₃

E

B wc÷b

A

3

3

3

9V I

Fuse d = 10 m

400 C 200 C

A B

ক্যান্টনমেন্ট পাবলিক্ স্কুি এ্যান্ড ক্মিজ, সৈয়দপুর হ ােমেস্ট-১

হেল িঃ দশে

লবষয়িঃ পদার্থ লবজ্ঞান

ৈেয়িঃ ২৫ লেলনে পূ থোনিঃ২৫

1| k~b¨¯’v‡b Kzj‡¤^i aªæeK Òk Ó Gi gvb KZ?

(K) 9  10⁹ Nm²C^–2 (L) 9  10⁹ Nm²C² (M) 9  10⁹ Nm^–2C^–2 (N) 9  10⁹ Nm^–2C² 2| wef‡ei GKK Kx?

(K) JC^–1 (L) NC^–1 (M) JC (N) J^–1C

 wb‡Pi wPÎwU jÿ Ki Ges 3 I 4 bs cÖ‡kœi DËi `vI:

wP‡Î A GKwU abvZ¥K Avav‡bi e¯‘| P we›`y‡Z GKwU Avavb + q ivLv n‡jv| P we›`y‡Z GKwU Zwor‡ÿÎ weivR Ki‡Q hvi Drm n‡”Q AvwnZ e¯‘

A|

3| P we›`y‡Z ¯’vwcZ AvavbwU F n‡j, Zwor ZxeªZv E Gi mv‡_

Gi m¤úK© Kx?

(K) F= qE (L) E = qF (M) E = F²

q (N) E = dF

4| P we›`yi Ae¯’vb cwieZ©b K‡i C we›`y‡Z Avbv n‡j-Kx NU‡e?

(K) Zwor ZxeªZv n«vm cv‡e (L) Zwor ZxeªZv e„w× cv‡e (M) e‡ji gvb n«vm cv‡e (N) Avav‡bi cwigvY n«vm cv‡e

5| Zwor ej‡iLvi AeZviYv K‡ib †K?

(K) Kzj¤^ (L) wbDUb (M) d¨viv‡W (N) AvBb÷vBb

6| †Kvb m¤úK©wU mwVK?

(K) R  L² (L) R²  L (M) R  L (N) R  1

L

7| Av‡cwÿK †iv‡ai GKK Kx?

(K)  (L) m (M)  m (N) (

m)^–1

 wb‡Pi DÏxcKwU c‡o 8 I 9 bs cÖ‡kœi DËi `vI:

GKwU evmvq GK w`‡b 60W Gi GKwU evj¦ R¡‡j 5 NÈvi Rb¨, 75W Gi cvLv P‡j 6 NÈvi Rb¨, †Uwjwfkb P‡j 2 NÈvi Rb¨

hvi ÿgZv 65W| cÖwZ BDwb‡Ui Gi wej Av‡m 3 UvKv|

8| †gvU e¨wqZ kw³ KZ?

(K) 88 kWh (L) 0.88 kWh

(M) 880 kWh (N) 8.8 kWh

9| GK w`‡b wej KZ Avm‡e?

(K) 264 UvKv (L) 2.64 UvKv (M) 2640 UvKv (N) 26.4 UvKv

10| Zwor e¨‡qi cwigv‡ci GKK Kx –

i. kWh ii. BOT iii. BDwbU

wb‡Pi †KvbwU mwVK?

(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii

11|

Dc‡i D‡jøwLZ wP‡Î RP Gi gvb KZ?

(K) 2R (L) 3R (M) R

2 (N) R 3 12| ÿgZvi gvÎv †KvbwU?

R R R

A

+q C

d P

(K) [ML²T^–2] (L) [ML³T^–3] (M) [MLT^–3] (N) [ML²T^–3]

13| 40 kg f‡ii GKwU evjK 20cm DuPz 15wU wmuwo 15s G DV‡Z cv‡i| †m KZ ÿgZv cÖ‡qvM Ki‡jv?

(K) 178.4 W (L) 178.4 J m^–1

(M) 78.4 W (N) 3  10⁶ W

14| w¯úªs‡qi Gi aªæeK k Ges w¯úªswU‡K w¯’i Ae¯’vi mv‡c‡ÿ x

`~iZ¡ msKzwPZ Kiv nq Zvn‡j Zvi mwÂZ kw³ KZ?

(K) kx² (L) –kx² (M) 1

2 kx² (N) 1 2 kx² 15| Ôw_Iwi Ae wi‡jwUwfwUÕ †K cÖ`vb K‡ib?

(K) wbDUb (L) M¨vwjwjI

(M) wc_v‡Mvivm (N) AvBb÷vBb 16| e¯‘i MwZkw³ e„w× Kiv hvq-

i. D”PZv e„w×i gva¨‡g ii. †eM e„w×i gva¨‡g iii. fi e„w×i gva¨‡g wb‡Pi †KvbwU mwVK?

(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii

17| cxob I weK…wZi †Kvb m¤úK©wU mwVK?

i. cxob  weK…wZ ii. cxob

weK…wZ = aªæeK iii. cxob  1

weK…wZ wb‡Pi †KvbwU mwVK?

(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii

18| cxo‡bi GKK Kx?

(K) N m^–1 (L) N m^–2 (M) N m¹ (N) N m² 19| c`v‡_©i PZz_© Ae¯’vi bvg Kx?

(K) M¨vm (L) cøvRgv (M) KwVb (N) Zij

20| e¯‘i IRb Ges cøeZv mgvb n‡j Kx n‡e?

(K) m¤ú~Y©iƒ‡c fvm‡e

(L) e¯‘wU Zi‡j AvswkK wbgw¾Z Ae¯’vq fvm‡e (M) Wz‡e hv‡e

(N) e¯‘wU Zi‡j m¤ú~Y© wbgw¾Z Ae¯’vq fvm‡e 21| †Kvb m¤úK©wU mwVK bq?

(K)  = 2 (L)  = 3 (M)  = 2 (N)  =  3 22| cvwbi ˆÎa we›`yi (Triple Point) ZvcgvÎv K‡Zv?

(K) 0 K (L) 1

273 (M) 25 K (N) 273 K 23| 30C ZvcgvÎvq 1 liter cvwb‡Z 100 gm IR‡bi GK UzK‡iv eid †Q‡o †`Iqv n‡jv| cy‡iv eidwU M‡j hvevi ci

†gvU cvwbi ZvcgvÎv KZ n‡e?

(K) 10C (L) 20C (M) 30C (N) 40C 24| Av‡cwÿK Zv‡ci GKK †KvbwU?

(K) J K^–1 (L) J kg^–1 K^–1 (M) J s^–1 (N) J kg^–1

25| ZvcgvÎvi †¯‹j¸‡jvi ga¨Kvi mwVK m¤úK© n‡jv-

i. TC

5 = TF – 32 9 ii. T_K – 273

5 = T_C 100 iii. TK – 273 = TC wb‡Pi †KvbwU mwVK?

(K) i I ii (L) i I iii (M) ii I iii (N) i, ii I iii