Pre University Board 2009 P.U.C Physics, Chemistry, Maths & Biology Physics - Question Paper
Code No. 33
Total No. of Questions : 40 ]
[ Total No. of Printed Pages : 16
March, 2009
( Kannada and English Versions )
Time : 3 Hours 15 Minutes ] [ Max. Marks : 90
( Kannada Version )
* t t ot y CO CO CO
ii) Bd Cbd J,drt>< ,ooJ J,/dezJ/dood ddoad d/de on>oi
I. X>A 0> djSLrtn JOb : 10 x 1 = 10
7 l ->
1. 3 0ode ?
2. J'yed B0n> aeXObd >q>a d/do ?
6
4. d,Xe, d,d>ert o donrt> dortod drrado d<d>eAftaart
a) ZS co o c
3 dertX dd, ddoO.
5. ddodo 1 C dod 0ddo o wdert> do od nado 1 oe.
Z/ co
oart drt> do deo ?
6. oF,d 0odeo ?
7. aOo d,d,od odo odo ,do$do X\ doe d/d aoo, yaoX.eJ rtOddaAdo ?
4 v o
8. ,o,X dodoXrt odo ad} Xa.
_D
9. NOR oad X@ ,6 ,addoo ddoO.
10. odorto 0oddeo ?
- B
ii. x> Adn> d/)ad dnn Oft : 10 x 2 = 20
11. , do$o d Xd y oo >3 Sdrad) 39 401 X>do ayajJ odoo leyartod d Xedo XodoadoO.
ot
12. >% Sdrad adr dii deXdra doa 0ddi
d,3,,rt>i diO.
6 6 oi
13. dped3<jrt> </d)dadd) 0ddi dertrt>i
14. didi adi,3dert> d.d, <i ad 3%rt rteSii aea.
> > Cp * o _D c
15. X>n Xdid d A diio C doa dOadyaO dadXJii XodoaiO :
|
1 ,mF |
 |
16. 33F
i) dde a<idd0 did ,de ?
co oS
ii) 0dde a<idd0 did ,de ?
co oS
17. ssoedOftd de
aes 4deAft 4rt>y adOft.
_0 cR
18. isdF0y ,oa,od </>d)>d) 0dd &%o $ft.
19. a* deZrt> 0odeo ? 3*>d* deZrt>
20. 4ed 0ode ? 0r ert ?
2 1. 6l5,*n> 5%j5*F d/O<dR $ft.
22. ns,d 3jFd asnn> da 0dd $ft.
- c
III. X> Ad)rt>, </d)>d o 44 ,Oft : 1x5 = 5
23. d,>d ad/Fra ajoft-
24. 4eddra ad&ft ds3vd deddraX@ aF0rt>R 4 d ,Sw, srt 4sd,s o3d dw3Sw,0 a,S ft.
66 ZS cp 66co>J_o
IV. X> Ad)rt>0 /d)d3dd 0-o dnn jOb : 2 x 5 = 10
25. >z> oy dC deXrt> dO}>dy3O deX@ ddDO.
26. e.m.f. A rtadjb 3rt& ,dD<Dd0Qrt
e.m.f. oribd doddra nd dX $b.
27. ad ddd/raDa ne 3X0 0yd td
jnDXodb 4s n njes ad, b.
0 _0 _D c cJ _0
V. X> Ad)rt>0 </d)d3dd 0ddo drtn jOb : 2x5=10
28. a) Sd <n> dDC >& CdO.
b) SC ,dd$ 3,d dDJDo sjpX ndj,nn dZ aea.
29. a) asdrad&DJj 0odde ?
b) ,ea <d rtD0d)-,d d< & aDdbrt>o d adOb.
cs> cp cn <=i
30. a) p-d/dO dJo n-d/dO CddXrt> dod cbd dDcb d63diw,n>DCR
$b.
b) p-n ,op 0odde ? dd /d rtorad) UD&DydX 3), d <>ert ddrtDJ d ?
_D
VI. X> Ad)rt>0 /d)d dodo drtn jOb : 3x5=15
31. od DDd odDX d ,dD od ddd >rt 05 aoe. w>d
_o _o c ZJ cr>
d,dd doedvj died 05675 aoe. adDd >S dsyCd dDE 5dbX>oSod- djdd yoX Xe dSedd0dd0R
XodoaO.
32. 0-1 oe. dadod ABCD >Xd )0nn>Y + Q + 2Q, + 3Q doo
+ 4Q dodade X,dodaA daaAd. >Xd dodd, 51 x 10 3 NC - 1 -adoX ed,J dd, Q ddidoSo, XodoSoO.
33. 12 V e.m.f. d> sarta 2 H woSoX daedd)> XaedSo, 4 H daedd)> lado! na,w<zaed/dXXi e doddS, daeQaaAd . ,do$ ,oZ6 2 sarta ,do$<do ,k6 0078 oe. wAd. d<Y& XaeSd) 45 wdd w ,>d naSed/dXd dOdrS rto}aoX sarta B H XodoSoO.
34. odo daeddS, do-dyadS5, Sr/n<o deyartod rtod Sdortdad 210 nm wdd, dd ya<doFdSdSo XodoSoO. 150 nm Sdortdad dod
* ct
>3dradSo de daedd doed, ded saodart r,od do.3-=i (-0 6
0d yajSort> rtod < (doSo XodoSoO.
gO) _D c
( daoXS a<dosaoX = 6-625 x 10 - 34 Js , d > 3S den 3 x 10 8 ms - 1 )
v CO '
VII. X> Ad)n>S, <d/>d)dadda o d, Sp : 1x5 = 5
35. 5" da dS, ,ortdodad sarta da<dj" daSd0, dX,sa dSo, XodoS<dood dbaX od &e do,add d, S d&eddsaoXdSo
_o ZJ ot
XodoS<dood d;aen >daSdo dO.
36. Xajdod dadS, od naSaed/dXdSo ddd/dXdsaA dOdr,od d/daert dad2R dO.
37. odi dad dd a deddo aie&dt ,a<diQod dodoa<diod d,ert d d>AoJ nraaodrti di>Q,aAd. dsa ortod daddd
ZS co <=i _o
Jo3 d,a a deddi dodiaiO. dedd Jo3(di d = 05 aoe. dedd Jo3(di da,, = 033 ai. aie.
|
i _>- |
d& 6fii ( n ) |
a ( oe. ) |
|
1 |
5 |
0-545 |
|
2 |
7 |
0-461 |
38. {> ya6deOd/d dd i d<>eA aeO a nded dodiaiid adad, d>dodoJ rti}aodrt>i aeSoaAd. d3a,ort>i deAft aeO a nded dodoaiO :
ya.deOd/dd + d<did da , dd,da5
= 0-0575 kg
6 cs> 6
yadeOdzd d + d<did da + aedo ,J djdda = 0130 kg da,do$d J = 28C
y * rs
= 2 V = 15 A = 34C
aeot Oeaont
&
o3d J
= 10 aaod
adist d,d,id ya<
e)rt - D
IX. X>Ad)rt> d, 3p : 1 X 10 = 10
39. a) XJX@ od>A dbbndodo3 XOd ylff Xd 02 be. n 250 kg 3 ,id ,x@d draSoYrtbd SbdbJzdb iT X 5 db} 380 rad m-1 >rt ,X@d ),drad 5 ,di} 00116 rad m2 kg-1 XS
djdb XodDroSiO. 4 b) dX 0odeb ? ,d/o3d X dX JJd aeS. 4
c) b-ddd ra d)d@dra drX, dZ aeS. dddrXd dX@dra drd Sen ,drfod 2
40. a) 02 m srti 12 A d,3fd,d3did oded OTXdd 03
co 6 y
T yoJX.edSOrort 3-6 x 10-2 N dedrd3 . ed otX
<A y co _o
>rt yoed d Xeddt XodSbO. ed OTXd) yoJX.eJX, oodAd dSXd de oiDribd dd, ? 4
4 V u co co 0
b) d,d, 3don 0odeb ? S eA # ddcd X, rtJeS <dd ad, &. 4
y t> y co cou _octj_o
c) (i) bQ dX >rt (ii) b d,edXrt$rt d63f drod rt>d dbO. 2
ot
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.
I. Answer all of the following questions : 10 x 1 = 10
1. What is dispersion of light ?
2. Name the scientist who confirmed the existence of electromagnetic waves.
3. State Brewsters law.
4. Give the formula for speed of light in Michelsons experiment when rotating mirror with ten faces are used.
5. What is the force between two point charges which are 1 C each separated by 1 m in air ?
6. What is thermistor ?
7. At which point on the axis of a circular coil carrying current, the magnetic field is maximum ?
8. Give an example for coherent scattering.
9. Write the truth table for NOR gate.
10. What is foam ?
II. Answer any ten of the following questions : 10 x 2 = 20
11. Calculate the angle of incidence for a ray of light to have minimum deviation of 39 40 1 in equilateral prism.
12. Write two differences between diffraction pattern and interference of UgM.
13. Mention any two uses of polaroids.
14. Give the expression for potential energy of a system of three charges.
15. Find the effective capacitance between A and C in the following
figure :
|
1 |
 |
16. What principle is involved in the
(i) Kirchhoffs First law, (ii) Kirchhoffs Second law ?
17. Write the expression for torque on a current loop placed in a uniform magnetic field and explain the terms used.
18. Mention any two causes of power loss in transformer.
19. What are Fraunhofer lines ? What is the importance of studying Fraunhofer lines ?
20. What is population inversion ? How can it be achieved ?
21. Write the quark model for proton and neutron.
22. Write two differences between collector region and emitter region of a transistor.
III. Answer any one of the following questions : 1 x 5 = 5
23. Obtain Lens-makers formula.
24. Give the theory of interference and hence obtain the condition for constructive interference in terms of path difference and phase difference.
IV. Answer any two of the following questions : 2 x 5 = 10
25. Obtain the expression for effective resistance of three resistors in parallel.
26. Derive the expression for sinusoidal e.mf. and represent graphically the variation of e.m.f. with time.
27. Obtain the expression for energy of an electron in the n th orbit of hydrogen like atom assuming the expression for radius.
V. Answer any two of the following questions : 2 x 5 = 10
28. a) Write any three characteristics of nuclear forces.
b) Define the terms nuclear chain reaction and critical size.
29. a) What is natural radioactivity ?
b) State and explain Soddys group-displacement law.
30. a.) Give three differences between p-type and n-type
semiconductors.
b) What is p-n junction ? Which property of p-n junction is used in rectification ?
VI. Answer any three of the following questions : 3 x 5 = 15
31. A luminous point object is placed at a depth of 0-5 m inside a liquid. A circular patch of light of radius 0-5675 m is formed on the surface. Find the critical angle and R.I. for the liquid.
32. Four charges + Q, + 2Q, + 3Q and + 4Q are placed at the corners of a square ABCD of side 0-1 m respectively. The intensity of electric field at the centre of the square is 5-1 x 10 3 NC - 1 . Find the value of Q.
33. A battery of e.mf. 12 V and internal resistance 2 H is connected in series with a T.G. coil of resistance 4 H . The number of turns is 2 and radius of the coil is 0-078 m. The angle of deflection is 45. Calculate the reduction factor of the T.G. and B H at the place.
34. For a metal the maximum wavelength required for photoelectron emission is 210 nm. Find the work function. If radiation of wavelength 150 nm falls on the surface of the given metal, find the maximum kinetic energy of the emitted photoelectrons.
( Plancks constant = 6-625 x 10 - 34 Js and velocity of light in vacuum is 3 x 10 8 ms - 1 . )
VII. Answer any one of the following questions : 1 x 5 = 5
35. Describe an experiment to determine the refractive index of the material of a convex lens by finding its focal length by shift method and radius of curvature by Boys method.
36. Describe an experiment to convert a given galvanometer into voltmeter of given range.
VIII. Answer any one of the following questions : 1 x 5 = 5
37. In an experiment to find the resistivity of the material of the wire by using metre bridge, the following readings are recorded. Using the data, calculate the resistivity of the material of the wire.
Length of the resistance wire = 0-5 m
Diameter of the resistance wire = 0-33 mm
|
T.N. |
Resistance in the right gap ( n ) |
Balancing length ( m ) |
|
1 |
5 |
0-545 |
|
2 |
7 |
0-461 |
38. The following readings are obtained in finding the specific heat of water by using Joules calorimeter. Using these data calculate the specific heat of water.
Mass of empty calorimeter + stirrer
= 0-0575 kg
Mass of empty calorimeter + stirrer + water = 0-130 kg
= 28C
Initial temperature
Voltmeter reading
Ammeter reading
Final temperature
= 2 V = 1-5 A = 34C
Time for which current is passed
= 10 min.
Specific heat of the material of the calorimeter = 385 J kg 1 K
PART - D
1 x 10 = 10
IX. Answer any one of the following questions :
39. a) A quartz plate cut with its faces perpendicular to its optic axis is found to annul the rotation produced by 0-2 m length of sugar solution of concentration 250 kg m - 3 . If the specific rotation of quartz plate is 380 rad.m - 1 and the specific rotation of sugar solution is 0-0116 rad m 2 kg - 1 , find the thickness of the quartz plate. 4
b) What is a capacitor ? Give the principle of parallel plate capacitor. 4
c) Define resolving power of an optical instrument. How can resolving power of a telescope be increased ? 2
40. a) When a straight conductor of length 0-2 m carrying current of
1-2 A is placed in a magentic field of strength 0-3 T, it
experiences a force of 3-6 x 10 - 2 N. Calculate the inclination of
the conductor with the field. Find the force, if the conductor is
at right angles to the magnetic field. 4
b) What are matter waves ? Obtain the expression for de Broglie wavelength. 4
c) Write the value of power factor for 2
i) a pure resistor
ii) a pure inductor.
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Attachment: |
| Earning: Approval pending. |
