Pre University Board 2008 P.U.C Physics, Chemistry, Maths
Karnataka second PHYSICS June 2008 Kan & ENG version is in Pdf Format Check tat beneath.
[ Total No. of Printed Pages : 16
Code No. 33
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
odrt>ot XdOTrtojaq,-ii) dd o-n> ,oaop /dez>/dbod
yddDSdQ, /)de odrt>b Xddribaq,.
I. X>A 0i 0 : 10 x 1 = 10
7 l ->
1. drar rde ?
2. d.edd aaroddb, dd d.3D.,d rte3<0 Xa.
S' > c _D CO
3. ,d\vrd d)d@dra
4. Xd*,* Oorto ,dert no o ?
5. ,3do o,J X<o adoorio e$.
cp 6 ci
6. oe&o # d/ JJ, ded X<, /oJ ?
y ti> d -o
7. deo{ adoo. $n.
ot
) x5r,oJo-
8. doo <rt>o ,oJ)o rtorart>0 ( Saturation properties e$Xdo rsle ?
9. oo 30} Xs.
10. o ( Half-adder ) 0oOeo ?
* ca
II. X>nd)n> d/i0 Jon :
10 x 2 = 20
n Je3 doo
_D
11. 4pjX ,o ,e3>oX rtJeSdoo OdoO. 4pjX 0d ae ?
12. >xo d/Xra oJo JOon ooJ ?
oi * _o oi 4 ct -o
14. dbd&bJz4> d,p 4s<b >& dbrad dbO dbJb oirt>b dOA.
_D ct
15. dbJ ad >rt db ad dbJ/rt> rdeo ?
16. ASod d d>dXd ddXJbb dooAdd /)jD 0ddo ort>bl db>aA.
17. > ei.es? {<d dbododb, dA doJb dd ,dbJed rtJedbb,
co eo ct _o _o ct
dbO. 18. cDdb ,bdbb ( Loop ) yoeb add dbdJ/d reo ? dd S.I. db>d/ d b, dbO.
ct
19. 12 mH ,,bo-4edXJbb>, odb ,bdbbb AC dbod<dSd. dd
oi Z> & co
dbbzoJd 50 Hz wdJr ,oZ6b AC -adbjOTdd) dOrort ,db$(db d,edX dJdb, XodoSbO. 20. dez eoX deJ 0odde ? odo djd} Xs.
Code No. 33 4
21. 5400 A Jdortdd)> <e d dD saDF od (
Work function ) X@ aS.
dos5" daX h = 6625 x 10 - 34 J-s
CO Cp
dard &d C = 3 x 10 8 ms - 1 .
CO
22. 0dD<jS*rt>odeD ? oD ad} Xs>&.
- c
III. X> Ad)rt>, </>d)add d, JO : 1 x 5 = 5
23. odD dDdd dD,d adDrd dazap. dd S.I. dDod/d dDO. oD dDdd) !\X@ odaA o&Dd/dod deeD drd rdeD ? 0ddD J>d dD,drt> dDd oJdart, w dD,>drt> ,oei ,d/ ,ortdDd>dd rtJeS dd dDO dJD ort>D
_D c _0 c
do. 24. wD eoX (D;dra QzdrarJ) 0ode ? odD ad} Xs. dpeda<jrt > <zd)ad) dDdD <Drt>Dct dDO.
25. 0- do deXrt>R S3zo< {>es>rt sz >o6tjOTrt> n teS rt>d ad &.
_0 c cJ _o
26. (/Fd ( Alternating current ) dFdd ? od ddo$<do aXddd Xeaed &doart aXddd yxt X.etd ,oto doro>rt,
oOk S CO 0 0 7
ddod tyeotrodd e.mf. rttedd alA 27. rtrtd ddod ,t,oan 6 tdortrtd djdsdd G.P. tyd>ert ydFdd d0. V. X> n)rt>, d/4d) 0rfo tp : 2x5=10 28. e- ( Postulates ) Xs. ed otd od
-> ot (?)
ddd, d>a.
ot
29. a.m.u. dt eV rt>d OT.Z.a.
_o 6 6
1 a.m.u. = 932 MeV 0od teOn). PTOd od N = 6022 x 10 23 aFt C = 3 x 10 8 ms-1 dt
CO _D
1 eV = 1-602 x 10 - 19 J.
30. p-n ,op {es 0oded ? -t&FX ded* >rt pe!-d dedrt>oded ? d-t)FX dded pe!e-ded*rt> odod ort >0r d>Q.
vi. d/d)d) o&> dnn o
31. 012 m ddjdD ,d/xd djdD odo doond doed
a sdradpodD 51 30' xeoan dd>Ad. oind
,rd < &dD d3A
d cn ct tr
dpdD dedod = 1562.
32. 6 nC Dj addd od odo rte>Qod 0doj 0d5,Drt>bR SdJrtdDedD ? adD,>de SoQd rte>dx ad'dS i>,rt, -
6 ct co eo
dbdpodaaod 0-06 m ddadd aoa<), aded edFd
da.
33. 2 A adddSadd dedD ,dg<dD d\ doed ,dg<dD dbdpodaaod 006 m ddadd aoa<), saoedo ,5 ,3od,J<dD dOd/radD ( Magnitude ) Xod&SDO ,dg<dD dDoDa0, yoedo ,5, ,3od,J<dD dod/radd da@&.
,dg<dD0 dd ,d n> ,oZ. = 20
co _o 6
,dg>dD ,d>,0 = 005 m
34. 1 TOP deSdDdJ-226 d&Dd) ( Activity ) 3-7 x 10 10 a& s- 1 wAd. desdodj-226 dFdood ,XoS, d3@&.
VII. oo 0 : 1 x 5 = 5
35. X> aXj<Y Xert> ,Xdeoe&d<), > ,o rar &a Xo&So
0.
36. 0 daX ed}(D ( Forward bias ) otXX deZo 0>oo 0.
VIII. X> A)rt>Y /)ad oo 0 : 1x5 = 5
37. X> A eX\}n>OR (eA of,o* a rtraaoX XooSO.
Xddy de = 500 H .
|
$ rs |
$&c< oe. > a CO |
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28C |
0682 |
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64C |
0368 |
38. X>n Xdb eXJ}rt>ct (eA na6<<je/X ,63ot ,X\v33r ( Current sensitiveness ) XoSdO :
if3Xe e.mf. = 1-32 V
|
na6<ze/X de = 210 H . | ||||||||||||
|
e)rt - D
IX. d> Ad)rt>, /d)ad o d, JO : 1x10=10 39. a) Don aesbrtoS d/ertd oiad deddra eD a<@e art a>e o<rt> ( Fringes ) dDaoDrt> d dddR 3@&. &e>Drt osn > oJd = 1-1 x 10 - 3 m S Jdortdd = 589-3 nm
&e>Drtoart$o dddAdDd dd = 1-3 m. 4 b) addrt > /d)ad a<D@ <Drt>DCR dDa. 4
c) oD ada d adadJ# art ada drt> ya,o Jrt
* * ZJ TD
rdeD ? 2
40. a) 50 H de nai6<zed/dddDCR 0-50 mA daD Dved wA
dOdr,<D dd azao< {es,esa dedo doDSDO.
na,,ed/dd rtod Qd< &d\ o&Dd/dco nesartod
6 cJ CO Q ej CO <=i
dD.wJda = 15 mA. 4
b) e,drt> /d)ad a<D@ czDrt>Dt dDa. 4
c) ,o,do Od# dJo ,o,do Odn> rdeD ? 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. |
