Physics Past Paper 2024 (Annual) - PDF

Summary

This is a physics exam paper for the Intermediate level (2024 annual) which includes a mix of objective-style and subjective questions. The questions cover various physics concepts.

Full Transcript

INTEMEDIATE EXAMINATION – 2024 (ANNUAL) Sub Code - 117 Physics (ELECTIVE) HkkSfrd 'kkL= ¼,sfPNd½ I.Sc. (TH) Total no. of Questions : 70+20+6 = 96 Total no. of Printed Pag...

INTEMEDIATE EXAMINATION – 2024 (ANNUAL) Sub Code - 117 Physics (ELECTIVE) HkkSfrd 'kkL= ¼,sfPNd½ I.Sc. (TH) Total no. of Questions : 70+20+6 = 96 Total no. of Printed Pages: Time : 3 Hours 15 Minutes Full Marks : 70 Instructions to the Candidates : 1- ijh{kkFkhZ OMR mÙkj i=d ij viuk iz’u iqfLrdk Øekad ¼10 vadksa dk½ vo’; fy[ksaA Candidate must enter his/her Question Booklet Serial No. (10 digits) in the OMR Answer Sheet. 2- ijh{kkFkhZ ;FkklaHko vius 'kCnksa esa gh mÙkj nsaA Candidates are required to give their answers in their own words as far as practicable. 3- nkfguh vksj gkf’k, ij fn;s gq, vad iw.kkZad fufnZ"V djrs gSaA Figures in the right hand margin indicate full marks. 4- iz’uksa dks /;kuiwoZd i BH (B) B < BH (C) B = BH (D) B = O (Where B = Intensity of magnetic field of magnet BH = Horizontal Components of earth’s Magnetic field) 27- ysUt dk fu;e fdl HkkSfrd jkf’k ds laj{k.k ij vk/kkfjr gS \ (A) ÅtkZ ds (B) vkos’k ds (C) laosx ds (D) nzO;eku ds 13 Lenz’s law is based on conservation of which physical quantity? (A) Energy (B) Charge (C) Momentum (D) Mass 28- izsjdRo dk ek=d gS (A) vkse lsdsUM (B) vkse@lsdsUM 1 (C) lsdsUM@vkse (D) vkse lsdsUM Unit of induction is (A) ohm second (B) (C) (D) 29- dh foek fuEufyf[kr esa ls fdldh foHkk ds leku gS \ (A) LC (B) (C) √𝐿𝐶 (D) Dimension is equal to dimension of which of the following ? (A) LC (B) 14 (C) √𝐿𝐶 (D) 30- fdlh izR;koÙkhZ /kkjk dk f’k[kj eku Io=5√2 ,sfEi;j gS] rks /kkjk dk oxZ ek/;e ewy eku (Irms) gksxk (A) 5 A (B) 10 A (C) 25 A (D) 50 A If the peak value of any alternating current is Io=5√2, then the root mean square value of alternating current (I rms) will be (A) 5 A (B) 10 A (C) 25 A (D) 50 A 31- ,d izR;korhZ /kkjk ifjiFk esa 8 vkse dk izfrjks/k rFkk 6 vkse dk izsjdRo Js.khØe esa yxs gSaA ifjiFk dh izfrck/kk gksxh (A) 2 vkse (B) 10 vkse (C) 14 vkse (D) 14√2 vkse In an alternating current circuit, a resistance of 8 ohm and an inductance of reactance 6 ohm are connected in series. Impedance of circuit will be (A) 2 ohm (B) 10 ohm (C) 14 ohm (D) 14√2 ohm 15 32- rIrrkj vehVj rFkk rIrrkj oksYVehVj nksuksa dk dk;Z&fl)kar /kkjk ds fuEufyf[kr esa ls fdl izHkko ij vk/kkfjr gS \ (A) pqEcdh; izHkko (B) jklk;fud izHkko (C) Å"eh; izHkko (D) fo|qr pqEcdh; izHkko The work-principle of both hot wire ammeter and hot wire voltmeter is based on which effect of the current ? (A) magnetic effect (B) Chemical effect (C) heating effect (D) electro-magnetic effect 33- fo’kq) izsjdh; ifjiFk esa 'kfDr xq.kkad dk eku gS (A) 'kwU; (B) 0-1 (C) 1 (D) vuUr The power factor of purely inductive circuit is (A) zero (B) 0.1 (C) 1 (D) infinite 34- fdlh VªkUlQkWeZj esa D;k lEHko ugha gS \ (A) Hk¡oj /kkjk (B) fn"V /kkjk (C) izR;korhZ /kkjk (D) izsfjr /kkjk Which is not possible in any transformer ? 16 (A) eddy current (B) direct current (C) alternative current (D) induced current 35- L - R ifjiFk dh izfrck/kk gksrh gS (A) R2 + W2L2 (B) √𝑅 + 𝑊𝐿 (C) R + WL (D) √𝑅 + 𝑊 𝐿 The impedance of L – R circuit is (A) R2 + W2L2 (B) √𝑅 + 𝑊𝐿 (C) R + WL (D) √𝑅 + 𝑊 𝐿 36- fuEufyf[kr esa dkSu&lh rjaxs oS|qr pqEcdh; ugha gS \ (A) vYQk rjaxs (B) xkek rjaxs (C) vojDr rjaxs (D) ,Dl rjaxs Which of the following waves is not electromagnetic ? (A) alpha rays (B) gamma rays (C) infrared rays (D) X-rays 37- lcls vf/kd vko`fÙk dh rjaxs gSA (A) ijkcSaxuh rjaxs (B) xkek rjaxs (C) n`’; izdk’k rjaxs (D) jsfM;ks rjaxs Waves of maximum frequency is 17 (A) ultraviolet waves (B) gamma waves (C) visible light waves (D) radio waves 38- fo|qr pqEcdh; rjaxksa ds lapj.k dh fn’kk gksrh gS (A) 𝐵⃗ ds lekukUrj (B) 𝐸⃗ ds lekukUrjksa (C) 𝐵⃗ 𝑋 𝐸⃗ ds lekukUrj (D) 𝐸⃗ 𝑋 𝐵⃗ ds lekukUrj The direction of transmission of electromagnetic waves is (A) parallel to 𝐵⃗ (B) parallel to 𝐸⃗ (C) parallel to 𝐵⃗ 𝑋 𝐸⃗ (D) parallel to 𝐸⃗ 𝑋 𝐵⃗ 39- ∈ E2 ¼tgk¡ ∈ ¾ fuokZr dh fo|qr’khyrk rFkk E¾ oS|qr {ks=½ dh chek gS (A) [MLT-1] (B) [ML2T-2] (C) [ML-1T-2] (D) [ML2T-1] Dimension of ∈ E2 (Where ∈ =permittivity of vaccum and E = electric field) is (A) [MLT-1] (B) [ML2T-2] (C) [ML-1T-2] (D) [ML2T-1] 40- ;fn fdlh ek/;e ls fuokZr esa lEiw.kZ vkUrfjd ijkoZru ds fy, ØkfUrd dks.k 30 0 gks] rks ek/;e esa izdk’k dk osx gSA 18 (A) 3 x 108 eh@ls (B) 1.5 x 108 eh@ls (C) 6 x 108 eh@ls (D) 4.5 x 108 eh@ls For total internal reflection, if the value of critical angle from any medium to vaccum is 300, then the speed of light in the medium is (A) 3 x 108 m/s (B) 1.5 x 108 m/s (C) 6 x 108 m/s (D) 4.5 x 108 m/s 41- +3D ,oa -2D {kerk ds nks ysalksa dks feykdj ,d la;qDr ysUl cuk;k x;k gSA la;qDr ysUl dh Qksdl nwjh D;k gS \ (A) 3 ehVj (B) 5 ehVj (C) 1 ehVj (D) 2 ehVj Two lens of +3D and -2D power are combined to form an equivalent lens. What is the focal length of equivalent lens ? (A) 3 metre (B) 5 metre (C) 1 metre (D) 2 metre 42- [kxksyh; nwjn’khZ esa vafre izfrfcEc gksrk gS (A) okLrfod ,oa lh/kk (B) okLrfod ,oa mYVk (C) dkYifud ,oa mYVk (D) dkYifud ,oa lh/kk 19 The final image of astronomical telescope is (A) real and erect (B) real and inverted (C) virtual and invertal (D) virtual and erect 43- leku vk;ke ,oa leku rjaxnS/;Z dh nks izdk’k rjaxs v/;kjksfir dh tkrh gSA ifj.kkeh rjax dk vk;ke vf/kdre gksxk] tc muds chp dykarj gSA (A) 'kwU; (B) (C) (D) 𝜋 Two light waves of equal amplitude and equal wavelength are superimposed. The amplitude of resultant wave is maximum, when phase-difference between them is (A) zero (B) (C) (D) 𝜋 44- dkSu lh ?kVuk izdk’k rjaxksa dh vuqizLFk izd`fr dh iqf"V djrh gS \ (A) fooÙkZu (B) viorZu (C) /kzqou (D) O;frdj.k Which phenomenon supports the transverse nature of light waves ? 20 (A) diffraction (B) refraction (C) polarisation (D) interference 45- /kzqfor izdk’k ds dEiu ry rFkk /kzqo.k ry ds chp dks.k gS 0 (A) 0 (B) 450 (C) 900 (D) 1800 In polarized light, the angle between plane of vibration and polarization plane is (A) 00 (B) 450 (C) 900 (D) 1800 46- izdk’k oS|qr mRltZu dh ?kVuk esa vkifrr izdk’k dh rhozrk c

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