SS401PHY.
No. of Questions 30 No. of Printed Pages 07
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,2017
SENIOR SECONDARY EXAMINATION, 2017
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PHYSICS
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GENERAL INSTRUCTIONS TO THE EXAMINEES : 1) narjmWu gd©àW_ AnZo àíZ nÌ na Zm_m§H$ A{Zdm`©V {bI| &
Candidate must write first his / her Roll No. on the question paper compulsorily.
2) g^r àíZ H$aZm A{Zdm`© h¢ &
All the questions are compulsory.
3) àË`oH$ àíZ H$m CÎma Xr JB© CÎma-nwpñVH$m _| hr {bI| &
Write the answer to each question in the given answer-book only.
4) {OZ àíZm| _o AmÝV[aH$ IÊS> h¡, CZ g^r Ho$ CÎma EH$ gmW hr {bI|&
For questions having more than one part, the answers to those parts are to be written together in continuity.
5) àíZ nÌ Ho$ {hÝXr d A§Jo«Or énmÝVa _| {H$gr àH$ma H$s Ìw{Q> / AÝVa / {damoYm^mg hmoZo na {hÝXr
^mfm Ho$ àíZ H$mo ghr _mZ|&
If there is any error / difference / contradiction in Hindi & English versions of the question paper, the question of Hindi version should be treated valid.
TEAR HERE TO OPEN THE QUESTION PAPERTear HeràíZ nÌ H$mo ImobZo Ho$ {bE `hm± \$mS>| `hm± go H$m{Q>E
Roll No.
Zm_m§H$
Sl.No. :
6) àíZ g§»`m A§H$ àË`oH$ àíZ
1-13 1
14-24 2
25-27 3
28-30 4
Q. Nos. Marks per question
1-13 1
14-24 2
25-27 3
28-30 4
7) àíZ g§»`m 21 VWm 27 go 30 _| AmÝV[aH$ {dH$ën h¢&
There are internal choices in Q. Nos. 21 and 27 to 30.
8) narjm _| H¡$bHw$boQ>a Ho$ Cn`moJ H$s AZw_{V Zht h¡&
Use of calculator is not allowed in the examination.
1) {H$gr MmbH$ _| BboQ´>mZm| Ho$ "Andmh doJ' H$mo n[a^m{fV H$s{OE& [1]
Define 'drift velocity' of electrons in a conductor.
2) EH$ J{Verb Amdo{eV H$U Ûmam CËnÞ joÌm| Ho$ Zm_ {b{IE& [1]
Write the name of fields produced by a moving charged particle.
3) Mwå~H$Ëd _| "`yar Vmn' H$s n[a^mfm {b{IE& [1]
Define Curie temperature in magnetism.
4) ñd àoaU H$mo {dÚwV OS>Ëd `m| H$hVo h¢? [1]
Why self induction is called intertia of electricity?
5) EH$ Amdo{eV H$U AnZr gmå`mdñWm Ho$ XmoZmo Amoa 100 MHz Amd¥{Îm go XmobZ H$aVm h¡& XmobH$ Ûmam
CËnÞ {dÚwV Mwå~H$s` Va§Jm§o H$s Amd¥{Îm `m hmoJr? [1]
A charged particle oscillates about its equilibrium position with a frequency of 100 MHz. What is the frequency of electromagnetic waves produced by the oscillator?
6) ""àH$me H$mo àH$me _| {_bmZ|o na AÝYH$ma CËnÞ hmo gH$Vm h¡&'' Bg n[aKQ>Zm H$m Zm_ {b{IE&[1]
"Light added to light can produce darkness". Write the name of this phenomenon.
7) _mÜ`_ Ho$ AndV©Zm±H$ H$s n[a^mfm {b{IE& [1]
Write the definition of refractive index of a medium.
8) hmBOZ~J© H$m A{ZpíMVVm {gÕmÝV {b{IE& [1]
Write Heisenberg's uncertainty principle.
9) EH$ BboQ´>mZ, EH$ Aë\$m (a) H$U VWm EH$ àmoQ>m°Z H$s J{VO D$Om©`o§ g_mZ h¢& BZ_o go {H$g H$U H$s
Xo ~«mo½br Va§JX¡Ü`© A{YH$V_ hmoJr? [1]
An electron, an alpha (a) particle and a proton have same kinetic energies.
Which one of these particles has largest de Broglie wavelength?
10) hmBS´>moOZ na_mUw Ho$ ñnoQ´>_ Ho$ {bE [aS>~J© H$m gyÌ {b{IE& [1]
Write the Rydberg formula for the spectrum of the hydrogen atom.
11) OoZa S>m`moS> H$m EH$ _w»` Cn`moJ {b{IE& [1]
Write one main use of Zenor diode.
12) àgmaU g§Mma `m h¡? [1]
What is broadcast communication?
13) nam C Amd¥{Îm (UHF) n[aga H$s Amd¥{Îm`m| H$m àgmaU àm`: {H$Z Va§Jmo§ Ûmam hmoVm h¡? [1]
Which waves normally broadcast the frequencies in ultra high frequency (UHF) range?
14) EH$ g_mÝVa n{Å>H$m dm`w g§Ym[aÌ H$s Ym[aVm 8 PF h¡& `{X BgH$s n{Å>H$mAm| Ho$ ~rM H$s Xÿar AmYr VWm BZHo$ ~rM 5 namd¡ÚwVm§H$ H$m H$moB© nXmW© nyU©V: ^a X| Vmo A~ g§Ym[aÌ H$s Ym[aVm kmV H$s{OE& [2]
A parallel plate capacitor with air has a capacity of 8 PF. Calculate the capacity of the capacitor if the distance between the plates is halved and the space between them is fully filled with a substance of dielectric constant 5.
15) Amo_ H$m {Z`_ `m h¡? Bg {Z`_ H$s H$moB© Xmo gr_mE| {b{IE & [1 + 1 = 2]
What is Ohm's law? Write any two limitations of it.
16) 12V {dÚwV dmhH$ ~b VWm 2W Am§V[aH$ à{VamoY H$s EH$ ~¡Q>ar {H$gr à{VamoYH$ go g§`mo{OV h¡& `{X Bg_| 0.5A H$s {dÚwV Ymam àdm{hV hmo Vmo à{VamoYH$ H$m à{VamoY kmV H$s{OE& `{X n[anW ~ÝX hmo Vmo
gob H$s Q>{_©Zb dmoëQ>Vm `m hmoJr? [1 + 1 = 2]
A battery of electromotive force 12V and internal resistance 2W is connected to a resistor. If the current of 0.5A is flowing through the circuit then calculate the resistance of resistor. If the circuit is closed then what will be terminal voltage of the cell?
17) 'l' bå~mB© H$s EH$ MmbH$ N>S> g_ê$n Mwå~H$s` joÌ 'B' _| {Z`V aoIr` Mmb 'v' go J{V_mZ h¡& `h ì`dñWm nañna bå~dV² h¡& J{VH$ {dÚwV dmhH$ ~b H$m ì`§OH$$ àmá H$s{OE& [2]
A conducting rod of length 'l' is moving with constant linear speed 'v' in a uniform magnetic field 'B'. This arrangement is mutually perpendicular. Obtain
18) {dÚwV Mwå~H$s` ñnoQ´>_ _| CËnÞ {H$Ýhr Mma Va§Jmo ({d{H$aUm|) Ho$ Zm_ {b{IE& [2]
Write the name of any four waves (radiations) produced in electromagnetic spectrum.
19) EH$ N>moQ>r Xÿa~rZ Ho$ A{^Ñí`H$ VWm Zo{ÌH$m H$s \$moH$g Xÿ[a`m± H«$_e: 192 cm VWm 8 cm h¡& BgH$s AmdY©Z j_Vm VWm XmoZmo b|gmo Ho$ ~rM H$s Xÿar kmV H$s{OE& [1 + 1 = 2]
The focal lengths of an objective lens and eyepiece are 192 cm and 8 cm respectively in a small telescope. Calculate its magnifying power and the separation between the two lenses.
20) àH$me {dÚwV à^md {H$go H$hVo h¡? àH$me {dÚwVYmam {H$Z Xmo H$maH$m| na {Z^©a H$aVr h¡?
[1 + ½ + ½ = 2]
What is photo electric effect? On which two factors the photo electric current depends.
21) AmßQ>mo BboQ´>mo{ZH$ gpÝY `w{º$`m± `m h¡? H$moB© Xmo AmßQ>mo BboQ´>mo{ZH$ gpÝY `w{º$`m| Ho$ Zm_ {b{IE&
[1 + 1 = 2]
AWdm
bm°{OH$ JoQ> (VH©$ Ûma) {H$go H$hVo h¡? Xmo gmd©{ÌH$ VH©$ Ûmam| Ho$ Zm_ {b{IE&
What is optoelectronic junction devices? Write any two names of optoelectronic junction devices.
OR
What is logic gates? Write two names of universal logic gates.
22) ~moa _m°S>b H$s Xmo gr_mE| {b{IE& [1 + 1 = 2]
Write two limitations of Bohr's model.
23) H$) ao{S>`mo EpQ>d nXmW© H$s "g{H«$`Vm' H$mo n[a^m{fV H$s{OE & BgH$m S.I. _mÌH$ {b{IE&
I) "" 6C H$s AÕ©Am`w 5700 df© h¡&'' BgH$m `m AW© h¡?
[½ + ½ + 1 = 2]
a) Define the activity of radioactive substances. Write its S.I. unit.
b) "The half life of 6C is 5700 years." What does it mean?
14
14
24) _mSw>bZ VWm {d_mSw>bZ _| AÝVa ñnï> H$s{OE& [2]
Distinguish between modulation and demodulation.
25) Q´>m§g\$m_©a _| hmoZodmbr H$moB© Xmo _w»` D$Om© hm{Z`m| H$m CoI H$s{OE& BÝh|o H¡$go H$_ {H$`m Om gH$Vm h¡?
bå~r Xÿ[a`m| VH$ {dÚwV e{º$ H$m g§MaU C dmoëQ>Vm na `m| {H$`m OmVm h¡? [3]
Describe any two energy losses occurring in transformers. How these can be minimized?
Why electric power is transmitted at high voltage upto large distances?
26) {ZåZ {X`o J`o {MÌ _| `w{º$ 'X' H$m Zm_ {b{IE & BgHo$ n[anW H$m {MÌ ~ZmH$a H$m`© {d{Y g_PmBE&[3]
{Zdoer g§Ho$V {ZJ©V g§Ho$V
Write the name of device 'X' in the following given diagram. Explain its working making its circuit diagram.
Input signal Output signal
27) VaJm§J« {H$go H$hVo h¡? hmBJ|g Ho$ Va§J {gÕmÝV Ho$ AmYma na àH$me Ho$ AndV©Z {Z`_m| H$s ì`m»`m
H$s{OE& [3]
AWdm
nmpíd©H$ {dñWmnZ {H$go H$hVo h¡? {H$gr Xn©U H$s \$moH$g Xÿar VWm dH«$Vm {ÌÁ`m _| gå~ÝY ñWm{nV H$s{OE&
What is wavefront? Explain laws of refraction of light on the bases of Huygens wave theory.
OR
What is lateral shift? Establish relation between focal length and radius of curvature X
X
28) pñWa {dÚw{VH$s _| JmCg H$m {Z`_ {b{IE& AZÝV bå~mB© Ho$ EH$ g_mZ Amdo{eV grYo Vma Ho$ H$maU {dÚwV joÌ H$m ì`§OH$ ì`wËnÞ H$s{OE& Amdí`H$ {MÌ ~ZmB`o& [4]
dmZ S>o J«m\$ O{ZÌ H$m Zm_m§{H$V {MÌ ~ZmH$a BgH$s ~ZmdQ> Ed§ H$m`©{d{Y H$m dU©Z H$s{OE&AWdm State Gauss law in electrostatics. Derive an expression of electric field due to an infinitely long straight uniformly charged wire. Draw necessary diagram.
Describe the construction and working of Van de graff generator making theOR labelled diagram.
29) ~m`mo gmdQ>© {Z`_ H$m gyÌ g{Xe ê$n _| {b{IE& {H$gr Ymamdmhr d¥ÎmmH$ma nme Ho$ Aj na Mwå~H$s`
joÌ H$m ì`§OH$ àmá H$s{OE& Amdí`H$ {MÌ ~ZmB`o& [4]
Epån`a H$m n[anWr` {Z`_ J{UVr` ê$n _| {b{IE& {H$gr bå~r Ymamdmhr n[aZm{bH$m Ho$ Aj naAWdm Mwå~H$s` joÌ H$m ì`§OH$ ì`wËnÞ H$s{OE& Amdí`H$ {MÌ ~ZmB`o&
Write the formula of Biot-Sevart law in vector form. Obtain an expression of magnetic field on the axis of a current carrying circular loop. Draw necessary diagram.
Write Ampere circuital law in mathematical form. Derive an expression ofOR magnetic field at the axis of a current carrying long solenoid. Draw necessary diagram.
30) nmoboamBS> `m h¡? BgHo$ H$moB© Xmo Cn`moJ {b{IE& Y«w{dV àH$me, Am§{eH$ Y«w{dV àH$me VWm AY«w{dV
àH$me H$s nhMmZ H¡$go H$amoJo? [4]
AWdm b|g _oH$a gyÌ
1 2
1 1 1
(n 1)
f R R
§ ·
¨ ¸
© ¹ ì`wËnÞ H$s{OE& {H$gr AdVb Xn©U H$m {ZMbm AmYm namdV©H$ Vb {H$gr AnmaXeu nXmW© go T>H$ X| Vmo Xn©U Ûmam ~Zo à{V{~å~ na `m à^md nS>oJm?
What is Polaroid? Write any two uses of it. How will you identify the polarised light, the partially polarised light and the unpolarised light?
OR Derive Lens maker formula
1 2
1 1 1
(n 1)
f R R
§ ·
¨ ¸
© ¹. The lower half of the concave mirror's reflecting surface is covered with an opaque material. What will be the effect on the image formed by the mirror?
