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PHYSICS, , For the which value of Resistance R =, , *, deflection: for following below electrical circuit., , when galvanometer shows zero, , , , , , , , , , , , e, ; X-12 + 2 + 5-2, 500Q G (Galvanometer) as Jc 2:, 5 (PF 600 R OG, | tL, 2V, BY. = 7 x-2=0, vel | Ga, ° ad Gomes), = +S00, (A). 400'2 (B) 2002 re pS ain xh, (C) 3002 R+so —, ° R+Sop, 2R+4 1000 =I2R, CY As following figure 2A current passing through a conducting wire, radius of cross- 1009 = 16, on ~ * sectional of wire at point A is 37 and point B is r respectively. Then find the ratio of, drift velocity at pointA & B. e, I= nawe, Va ox), ‘ Op 8, Vda = Ay = WH? = |, Vig An wast 4, 9 . omar, ; 1, (C) 3 @) 3, (Space for Rough Work), = 2 = ), = xX SoD aXR, o 1 So, fed, So, FZD (18) (3 @1.0), , }
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ce point at 150. cm, , length of the wire. Ifthe cell is replaced by another cell and the balance point shift, , 2 Inapotentiometer arrangement, acellofemf 1.5 V gives a Balan, oivi to 210 cm, what is the emf of the second cell?, , (6G = 160, aaive Pe Bae, (©) 12V *(D) 32V, ISx2t0 = Gy 210, SX210 = 15», 1s0 150 KO, , Circular loop having radius r, carrying current I, produces magnetic field at the, be the magnetic dipole moment of this loop?, , , M= 1A, , aBr° 2a, © 2, = 110, , ae, , centre loop is B. What, , , , xBr>, A) “tg, , , , , , ~. 88), , = B2ana, , 3 4nBr°, oa ©) a, Mo = area, , Mo, , , , The horizontal component of the earth's magnetic field at a certain place is, 3.0 x 10°°T and the direction of the field is from the geographic south to the, geographic north. A very long straight conductor is carrying a steady current of 2A., ‘What is the force perupit length on it when it is placed ona horizontal table and the, , direction of the current is east to west?, > °, , —, a, , A solenoid of length 0.5 m has a radius of 1 cm and is made up of 1000 turns. It, carries a current of 10A. What is the magnitude of the magnetic field inside the, solenoid? B= Uonl, , (A) 7.23 «10° T (8) 171« 10? T = AT 05 "R1000 x10, ~O Algal ©) 628% 10° T me its, = 29120 x107*, = 251x105 «10 F, , a At certain place on the surface of the earth, horizontal component of earth's, , magnetic field is same as vertical component magnetic what, will be angle of dip at that place? os capt, ° ton = Be, , (A) 90° B® ae a, , (C) 60° (D) 30°, , ad, , ff eases ee, , ata distance 75 cm from its mid point? The i ignet i, SasAut « a ae Poi magnetic moment of the bar magnet is, , , , Ho WH, ela eet bo an, (A) 3.56107 T ™@) 64«107T an 90, © 1.78*107T ©) 32x107T x07 x08, TSKTSATS, , 1-77 410 x7a6x 10 F, , ee For a long current carrying solenoid having inside magnetic field is 0.6 T. Then, , find the magnetic energy per unit volume is, , , , , , , , (A) 2x 10° NA Seoywoxa3time £* 822 Cnaagg denny ————— we, oe s : s —— A), Zerg OD) 286% 10m? 2, (C) 9% 10° NA 3« 10° NA = :, © 9 Nim @) 3x m BL s (C) 5.23% 108m? $0) 143105? = =, = 3xw-xQ. Eid Le, (Space for Rough Work) =€xI0> pace for Rough Work) = O-6xO-G, - By 2x4 rxerF, cP 24M is = / = 0 0143 x10*, » 93 2 ' = 143 ie, —_., ya, FZD (18) (4) FZD (18 ;, iS]
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Glass prism having a refractive index j, placed in a air, for that angle Sane, ~ deviation of prism is same as angle of prism. Then what is value ofangl ?, , , , , , = San =A Iida, mis -1 pe, (A) cos™(u) _ B) os (4) r€, une sin = 4 sinh, -1 i, ©) 200s"! aiz2 epyereosil(Y4)n, (©) 2cos"(u) vee Qenust = sushp, gev'y 224 warzeeg * 2 2, , », , 2, es The radii of curvature of the faces of a double convex lens are 10 cm and 15 a8, focal length is 12 cm. What is the refractive index of material of lens?, , (A) 2.42 Mops Lb sm-0FLth), , 10, (© 1.62 ©) 133 =(u-0s, 38 =n, [2 180 30, 12, PP Find equivalent focal length due to combination of two convex lens are in contact, , having a focal length both of them 30 cm. L het, , (A) 40cm ®) 2m fy fh, , (©) 30cm Dion, Pile h ag, 30 30 35, , , , , , , , gf Estimate the distance for which Tay optics is good approximation for an aperture, , of 5mm and wavelength 500 nm?, , , , 2, (A) 20m *(B) 50m °re ,, (©) 30m . (D) 40m = gx PxsxiorF, Soo x 1974, = 0-08x10?, , _ >» ‘The wavelength of light 500 nm is used in a Young's double-slit experiment. The, , er tats between the slits and screen is 100 cm and the, , , , its are separated by, , 1mm. Then find distance between fifth (5*) and third (3) bright fringes., dinoonA = SAD —3aD, (A) 4mm > 2 (@) 2mm J di, (C) 3mm : © Imm = 20D = axs@x10%x), 3 —, 03, , =, > Which of those metal having least work function (9,) among them? ee, , i ®) Ga 7 lee, , co h ms), (C) Pb (D) Mo eBags = Ime, a, , =, , ae is the de-Broglie wavelength associated with an electron, accelerated through, a, , Potential differencé of 64 volts? 12-27 g, , , , 2 A tank is filled with water to a height of 16 cm, Find the apparent depth of aneedle [h= 6.63 x 10° J.s] jG J2et, ae lying at the bottom of the tank is measured by a microscope. Refractive index of. =, water (y,,) is 44. Me om hire ee (A) 1.98 a %@) 153-4, ; B) 106cm = ; : :, (A). 8.0. em ®) 106em = I9Em iS ise my 128%, © 200m ©) 94cm :, (Space for Rough Work) (Space for Rough Work), FZD 9) Ts, FZD (18) 18) (18) 01 @T.0), i 4 mt, =
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oo Inphotoelectrical effec, thatthe graph of stopping potential (V,) versus frequency, , vis Straight line. What will bet the slope of this straight line?, - €Vy = hf - hfe, , OF HONK ys nt -hb, e @, , of om £ yee a os, , m zh, — e c, 29 What is the shortest wavelength present in the Balmer series of spectral line?, ta [Where is Rydberg constant] ? 27 0 yer ( iol’ \, é : n '4 0, m ., tentgeee 2, = dB:, : OR RE, 3 ‘ apo ‘1, OR - "OR, , i i i, 2J) The radius of the innermost electron orbit of a hydrogen atom is 5.3 x 10 m., , What are the radii of the n=4 orbit?, , singe The ground state energy of hydrogen atom is 13.6 eV. What will be the kinetic, energies of the electron? 2 =—Te, , (A) -27.2eV @) ‘as eV, , (© 272ev Osdev. *, , PZ How many neutrons will produced fora given following nuclear fission reaction?, , dn+793U> 36u—> Bat Bkr+(dn 3, , (A) 4 @) 2, , BOQnin, SED) a ~, , ee -life time of a radioactive element is 16 years. How much time will taken to, , reduce its activity 16 part? ace, tan 2, WA) 64years 2 16 @) years, , (C) 32 years (@) 8years, , , , 2 31) _What should be the ratio of neutron and proton for stability ofheavy nucleus?, (A) 10.6 x 107m Az Men we ay _, (B) 4.24« 10m a @) 2: a @) 2:, = 5:3 x0" x 16 (322m @) 1:1, (©) 848% 107m — ’, \, (D) 2.12% 107m 2% sce, (Space for Rough Work) (Space for Rough Work), E 2, FZD (18) (10) ‘ZD (18) (11) 0.), , Re eee SI ee err sree iieererpee
