Pre University Board 2008 P.U.C Physics, Chemistry, Maths & Biology " Physics " Code 33 For English version see page no 9 - Question Paper
[ Total No. of Printed Pages : 16
Total No. of Questions : 40 ]
June, 2008
( Kannada and English Versions )
Time : 3 Hours 15 Minutes ] [ Max. Marks : 90
( Kannada Version )
* t t ot J co co co
</>4e odrt>bl ii) dd o-n> ,oop /deza,/dbod dad </>4)e odn>ot Xdoano4)S<,.
I. X>A 00a 0b : 10 x 1 = 10
7 l ->
S' > * * > 6 _D CO
4. OoX*, dorto SOrra O/ertS rtoO o ?
5. ,ao Po,J X<o aoOoOo e$.
cp 6 ot
6. Poe&o # </O JJ,S Ooed X<, O/OoJ ?
y ti> d -o
7. deo{ aoOoOo.
ot
) OSFoJO.
8. cY<riod' <n>o ,00 rtorart>o ( Saturation properties e$X(o rOeo ?
9. oSo 3d} XS.
10. D* ( Half-adder ) 0odeo ?
* CZ
II. X>AO)n> /O)d JO :
10 X 2 = 20
n Je3 oo
_D
11. OpjXS O,oP O3,eO>oXS Jeo doO. OpjXS 0y a&Oe ?
12. >Xo /odrt XS ,,mO OoJb Jdort ,j&)OOo -oSoJ ?
oi * _D oi 4 ct -0
14. dod&od)> d, ddjSCo >& dorad rteCoo idoO doo ort>o dO.
_0 c
15. do adod >rt do ad dod/rt> drded ?
16. Sod jdd ddXCoo dooa&dod C/d)dJdd) 0ddo ort>ct doa.
17. ei.es? {j<d doddo d doo dd ,doed rte3Coo
CO 0 c _D _D c
doO. 18. do ,do$Co ( Loop ) yjoeCo ad dodgd drded ? dd S.I. do<d/ d o doO.
ot
19. 12 mH ,,Coo-djeddJCoo>, od ,do$Coo AC doododSd. dd
oi Z> & co
doozod 50 Hz wdr ,oZ6Co AC dodjdd) dOdrt ,do$Co d,edX d,jdo XodoSoO. 20. dez eoX de 0odde ? odo djdd} X&S.
Code No. 33 4
21. 5400 A Jdortddd)> dedd dDJ od (
Work function ) d@
dos5' dsd h = 6625 x 10 - 34 J-s
CO Cp
SdFJd d>3 ted C = 3 x 10 8 ms - 1 .
CO
22. 0dD<jS*rt>oddeD ? oD rodd} Xs>&.
- c
III. X>Ad)rt> <d/d)ddd o dn JO : 1 x 5 = 5 23. odD dDdd dD,d dDdrd dd S.I. dDod/d dDO. oD dDdd) J d\X@ <odA o&Dd/dod deed dr#d rdeD ? 0ddD J>d dD,drt> dDd oJddsort, w dD,>drt> ,o<>e&(dD ,d/ ,ortdDddd dd dDO d J ort>D
_D c _0 c
do. 24. wDq eoX (D;dra adrarJ) 0oddeD ? odD sd} Xa. dpeodidjrt > /d)sdd dDdD <drt>Dct dDO.
2 x 5 = 10
25. 0- do dedXrt>o szodd {eQrort sz adosn n 3e3 rt>. ad>& &.
_0 c cJ _o
26. d </F(o dodSd ( Alternating current ) rde ? odo ,do$<oo aXddd Xeaeo ddoart aXddd sx3 Xe3dS ,3o & doro>rt,
oOk y CO 0 0 7
,do$<o d,e03rtod e.m/. rteo adj-
27. rtrt>o rtodo&d ,3,doart dd 3dortrt>o dddsod G.P. ddo d/dertd yordo ad0.
V. X> Ad)rt> </>d)d3dd 0rfo drtrt JO : 2x5=10
28. ed" d;&ty3drt>o ( Postulates ) Xs. ed" roo3d odo
-> ot (?)
ao&oo do>a.
ot
29. a.m.u. do3o eV rt>o OT.Z.a.
_o 6 6
1 a.m.u. = 932 MeV 0odo 3>e0.
dPndx 0d" N = 6-022 x 10 23
aro>r3 d TO 3 KdC = 3 x 10 8 ms-1 do3o
CO _D
1 eV = 1-602 x 10 - 19 J.
30. p-n ,op {es 0odeo ? o,w&-3jrX ddera" >rt pe!-d <dera"rt>oddeo ? do63-3KFX dded 3ele-d<dera"rt> ododo ort >o do>Q.
VI. d/dddd dodo dnn J0
31. 0-12 m ddd ,draoJd dd odo doond doed d> a sdradod 51 30' xedoan dJdAd. oind dD ,rd < &dx d3A
d CO oi
n dpd dedoX = 1562.
32. 6 nC Dj ddded od odo rte>aod 0Dj 0dydrt>bR ddJrtdodeXo ? d,dde doad rte>dx ad>rJdS i>,rt, dd
6 <* co eJ
dbdodo&Sod 006 m dddd aodb><), dXeJd edrJd
33. 2 A dddS-d ded ,d$d d doed ,d$d dbdodo&aod 006 m ddcbd aodo><), sedo odd dodzradR ( Magnitude ) Xodo&SdO ,cb$d dbdodb, yoedo dy) joddo dod/rad da@&.
,d$doS dod n> ,oZ. = 20
co _o 6
,Cb$do ,03,0 = 0-05 m
34. 1 TOP deSdodJ-226 doJzd) ( Activity ) 3-7 x 10 10 s- 1 wAd. desdodj-226 ddod ,XoS, d3@&.
VII. X>A4rt> 4 0 : 1 x 5 = 5
35. X> aXp Xert> ,Xdeoe&d<), > ,o rar &3 Xo&So
0.
36. 0 droX dod ,ed}(d ( Forward bias ) otXX
deZid 0><do 0.
VIII. X> Art> <z4d) oo 4 0 : 1x5 = 5
37. X> A eXJ}rt>ct dieA oF,d* rtraoX XodSoO.
Xb$3 de = 500 H .
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$ rs |
$&c< oe. > a CO |
|
28C |
0682 |
|
64C |
0-368 |
38. X>n Xdb eXJ}rt>ct deA TO6<ze/X >i3ot ,X\v33r ( Current sensitiveness ) XodSO :
if3Xe e.mf. = 1-32 V
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n<ze/X de = 210 H . | ||||||||||||
|
e)rt - D
ix. x> Ad)n>, /d)sdd jo : 1x10=10
39. a) don aesbrtoa ertd, oisd deddra ed0, s<@e s>rt a>e o<rt> ( Fringes ) dDdodDrt> dddd, 3@&.
&e>Drt oart > dD> oJd = 1-1 x 10 - 3 m
S Jdortdd = 589-3 nm
&e>Drtoart$od ddAdDd dd = 1-3 m. 4
b) dddrt > /d)sdd s>co@ zDn>DCR dDa. 4
c) odD adsid dd adsid dJ# srt Sddrt> ys,o Jrt
* * J/ rs
drdeD ? 2
40. a) 50 H dedd ns6<zed/ddDR 0-50 mA dsd dvo wA
Odr,<D dd szsodd, {ea,essd Oeddd, dodaDO.
ns,,ed/dd rtod ad< &d\ o&Dd/dD essrtod
6 cJ CO Q ej CO <=i
-adDJdsd = 1-5 mA. 4
b) e,drt> /d)dsdd s<D@ czDrt>Dt dD>a. 4
c) ,o,do dOX# dJo odo dOdn> drdeD ? 2
Note : i) Numerical problems solved without writing the relevant formulae carry no marks.
ii) Answers without relevant diagram / figure / circuit wherever necessary will not carry any marks.
Answer all the following questions : 10 x 1 = 10
1. What is meant by dispersion of light ?
2. Give the condition in mathematical form for destructive interference in terms of path difference.
3. Define limit of resolution of a microscope.
4. What is the aim of Michelsons rotating mirror experiment ?
5. State Coulombs law in electrostatics.
6. Give the principle on which meter bridge works.
7. State Lenzs law.
8. Nuclear forces exhibit saturation properties. What does this
statement mean ?
9. Give an example of Hadrons.
10. What is half-adder ?
II. Answer any ten of the following questions : 10 x 2 = 20
11. Write an expression for refractive index of the material of the prism in terms of its angle. Is the expression true for all the positions of the prism ?
12. When does light possess particle nature and wave nature ?
13. Give two differences between Fresnel diffraction and Fraunhoffer diffraction.
14. Write the expression for specific rotation for a slab of optically active solid and explain the terms.
15. What is meant by electric dipole and electric dipole moment ?
16. Mention any two factors on which the capacitance of a cylindrical capacitor depends.
17. Draw Wheatstones network and write the condition in mathematical form for its balance.
18. What is meant by magnetic dipole moment of current loop ? Write its
S.I. unit.
19. An inductor of self-inductance 12 mH is in an AC circuit. Find its inductive reactance if an AC current with frequency 50 Hz flows through it.
20. What is line absorption spectrum ? Give an example.
21. Calculate the photoelectric work function for a metal of threshold
o
wavelength 5400 A.
Given : Plancks constant h = 6-625 x 10 - 34 J-s
Speed of light in vacuum C = 3 x 10 8 ms - 1 .
22. What are emulsions ? Give an example.
III. Answer any one of the following questions : 1 x 5 = 5
23. Define power of a lens. Write its S.I. unit. What is meant by linear magnification produced by a lens in a direction perpendicular to its axis ? Write the expression for equivalent focal length of coaxial combination of two thin lenses separated by a finite distance and explain the terms.
24. What is dichroism ? Give an example. Write any three applications of
polaroids.
IV. Answer any two of the following questions : 2 x 5 = 10
25. Derive the expressions for branch currents when two resistors are connected in parallel.
26. What is meant by alternating current ? Derive the expression for sinusoidal e.m.f. induced in a coil rotating with uniform angular speed in a uniform magnetic field.
27. With a neat labelled diagram, explain the working of G.P. Thomsons experiment to confirm matter waves.
V. Answer any two of the following questions : 2 x 5 = 10
28. Give Bohrs postulates. Mention a limitation of Bohrs theory.
29. Define a.m.u. and eV. Show that 1 a.m.u. = 932 MeV.
Given :
Avogadro number N = 6-022 x 10 23 ,
Speed of light in vacuum C = 3 x 10 8 ms - 1 and
1 eV = 1-602 x 10 - 19 J.
30. What is p-n junction diode ? What are light emitting diode and
photo-diode ? Mention an application each of light emitting diode
and photo-diode.
VI. Answer any three of the following questions : 3 x 5 = 15
31. A ray of light is incident on one of the faces of a parallel sided glass
slab of thickness 0-12 m at an angle of incidence 51 30 1 . Calculate the lateral shift produced.
Given : Refractive index of the glass slab = 1-562.
32. How many electrons have to be removed from a metal sphere such
that it aquires a charge of 6 nC ? Calculate electric intensity at a point 0-06 m from the centre of the charged sphere when it is placed in vacuum.
33. Find the magnitude of magnetic induction at a point 0-06 m from the
centre and along the axis of a circular coil carrying a current of 2 A. Also calculate the magnitude of magnetic induction at the centre of the coil.
Given : Number of turns in the coil = 20 Mean radius of the coil = 0-05 m.
34. Activity of 1 gm of radium-226 is 3-7 x 10 10 distintegration s _ 1 .
Calculate the half-life of radium-226 in seconds.
Given : Avogadro number = 6-022 x 10 23
VII. Answer any one of the following questions : 1 x 5 = 5
35. Describe an experiment to determine the dispersive power of the material of a prism by measuring its angle and angles of minimum deviations for any two colours using a spectrometer.
36. Describe the experiment to draw forward bias characteristics for a semiconductor diode.
VIII. Answer any one of the following questions : 1 x 5 = 5
37. Determine the temperature coefficient of resistance of the thermistor using the following data :
Resistance in right gap = 500 H .
38. Calculate current sensitiveness of a given galvanometer using the
following data :
e.m.f. of the given cell = 1-32 V
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Resistance of the given galvanometer = 210 H . | ||||||||||||
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any one of the following questions : 1 x 10 = 10
IX. Answer 39. a)
Calculate the distance between the centres of 4th and 7 th bright fringes in an interference pattern produced in Youngs double slit experiment.
Given : Separation between the slits = 1-1 x 10 - 3 m Wavelength of light used = 589-3 nm Distance of the screen from the slits = 1-3 m.
4
Mention any four applications of capacitors. 4
b)
c)
What is meant by superconductivity and critical temperature of a superconductor ? 2
a galvanometer of resistance 50 H in order to convert it into an
ammeter of range 0 - 50 mA.
Given : Current required to produce full-scale deflection in the galvanometer is 1-5 mA. 4
b) Mention any four applications of lasers. 4
c) What is meant by coherent scattering and incoherent scattering ? 2
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Attachment: |
| Earning: Approval pending. |
