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(chatquestion)...Three separate segments of equal area A1, A2 and A3 are shown in the energy distribution curve of a blackbody radiation. If n, n, and n, are number of photons emitted per unit time corresponding to each area segment respectively then : E, 2013 A, A A, (A) n, > n, > ng (B) n, > n, > n2 (D) n, > n, > n, Fu= °u = 'u (O)...(Heat transfer. please help)
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telegram-61430
asked
Mar 31, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...A sample of dilute H,SO, of purity 40% (by volume) and 50 ml of this acid solution was allowed to react with Zn. The volume of Ha gas in litres liberated at 1 atm and 273 K is (Density of pure H,SO, is 1.3 g mL-)...(Can anyone help me with it...asap)
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telegram-61423
asked
Mar 31, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Paragraph for Questions 13 & 14 Consider a perfectly conducting uniform disc of mass m and radius 'a' hinged in a vertical plane from its centre and free to rotate with respect to hinge. A resistance R is connected between centre of the disc and periphery by using two sliding contacts C1 & C2. A long non conducting massless string is wrapped around the disk, whose another end is attached with a block of mass m. There exists a m C2 ma? uniform horizontal magnetic field B, whose arrangement is shown in figure. Given system is released from rest at t 0. Assume friction between string and disc is sufficient so that there is no slipping between them let at any instant t, velocity of block is v, angular velocity of the disc is o and current in resistance is i. g. Find the terminal speed of the block of mass m is (Terminal speed = constant speed attained by the block after very long time) 13. mgR (A) B'a? 2mgR (B) B'a? 3mgR (C) B'a? 4mgR (D) B'a?...(Can you please solve this)
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telegram-61417
asked
Mar 31, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...23. The shown container has all insulating surface except bottom through which heat can flow. The bottom has area of cross-section A, thickness a and thermal conductivity k. The movable piston is insulating and massless and no leakage is possible through it. Initially (at time t = 0) the gas (monatomic) inside the container is at temperature T, and volume V. The surrounding temperature is T (> T,) and pressure P. Find (a) the temperature of the container as a function of time. (b) the height of piston from the bottom as a function of time if initial height is h 23,
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telegram-61414
asked
Mar 31, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...A thief crosses a check point with a constant high speed at time t = 0. After waiting for certain time interval police car starts chasing thief with constant acceleration and catches the thief: Graph (1) Graph (2), (1) Graph (1) represents displacement vs tima graph for police car. (2) Graph (2) represents displacement vs time graph for thief. (3) Displacement of police car and thief are pe equal from check point. (4) Average velocity of police car and thief is pot equal in time interval t=t, to T till thief is caught. 28, Velocity of a particle varies with time a. v =t² -t-2. Average speed of the particle in time interval from t = 0 to t = 4 sec is : 4 (1) m/s (2) 2 m/s (3)3 m/s (4) 5 m/s 3 Paragraph for question nos. 29 and 30 The next TWO questions will refer to the following situation. A car starts from rest and accelerates as shown in the accompanying diagram. a 4-...(27 send soln)
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telegram-61410
asked
Mar 31, 2020
by
balaji.thirumalai
1
answer
(chatquestion)..., Hence the Bohr orbit would be (a)-41 kJ mol1 (c) -164 kJ mol-1 [CBSE AIPMT 2005] (b) -1312 kJ mol-1 Aet - 82 kJ mol position is momentum, m s1. The mass of an 24. The frequency of radiation emitted when the electron falls from n = 4 to n= 1 in a hydrogen atom will be (Given ionisation energy of H = 2.18x10-18 h= 6.625x 10-34 (a) 1.54x 1015 s-1 JC3:08 x 105 s- J atom-1 and %3D AIPMT 2008] Js) (b) 1.03x 1015 s (d) 2.00x 1015 s 2-18 xG 6/눈- ns-1 [CBSE AIPMT 2004] ns1 ん...(In this question why we are not using the formula E=13.6(z2/n2) Why we are using E=2.18(z2/n2) Please explain somebody
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telegram-61401
asked
Mar 31, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...9. The water equivalent of a calorimeter is 50 g. This calorimeter is used to heat 100 g of water from 10°C to 60°C. Amount of heat required to do this is (1) 7.5 kcal (2) 5.0 kcal (3) 2.5 kcal (4) 10.0 kcal uor Pusa Road New Delhi-110005 Ph.011-47623456
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telegram-61398
asked
Mar 31, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...Three identical uniform spheres, each of mass M and radius R, are placed as shown in figure. The moment of inertia of the system about the axis AB is 46 36 (1) MR2 (2) MR? 19 17 (3) MR? (4) MR?
other
telegram-61396
asked
Mar 31, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...14. 0.2 g of sample of H,0, required 10 ml of 1N KMNO, solution in a titration in presence of dil. H,SO4. The percentage purity of H,0, is (1) 25% (2) 65% (3) 85% (4) 95%
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telegram-61393
asked
Mar 31, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Google Play Netflix N Netflix, Inc. In-app purchases 4.5* 12+ 8M reviews 14 MB Rated for 12+ O...(➜ NetFlix (Mod) ➜ App v7.49.0 ⬇️ https://userupload.net/y6qvxl3d5c2j
other
telegram-61389
asked
Mar 31, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...ALLEI Brz+КОН(aq) CHC13 53. CH;-CH;-C-NH, Y 53. КОН Н.о® P+Q< P and Q are :- (1) CH;-CH2-NH, and HCOOH (2) CH,-СH,-СООН and NH3 (3) CH;-СH,-CH--NH, and HCООН (4) CH3-COOH and NH3
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telegram-61386
asked
Mar 31, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Which of following carbocation will undergo rearrangement? CH, CH, (a) (b) (c) (d) (e) (f) (g) |(h) Ph (1) ČH, –0-CH, – CH, – CH, () CH, (k) (1) (m) -CH, Ph (n) CH, – CH, - CH, (0) (p) CH, -8=0 8=D0 %3D CH, – CH, - O...(Class 12, chemistry)
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telegram-61378
asked
Mar 30, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...For the galvanic cell: Fe(s) | Fe3+(0.02M) || Cu2+ (0.1M) | Cu (s) the EMF of cell at 298 K is 0.404 V. The value of AG°, (in kJ) for the cell reaction per mole of Fe(s) reacted at 298 K is [2.303 x R x 298 0.06, 1F = 96500 96500 (log2 = 0.3)
other
telegram-61370
asked
Mar 30, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...(ii) a?-x = x*(1+a² +a*)-x³ a? a at -x Ania ao a.
other
telegram-1570
asked
Mar 30, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...(14()4 4. (1+.
other
telegram-61361
asked
Mar 30, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...ension If a liquid drop of water having radius R as shown in figure. The surface tension force between the left half surface and right half surface is [where T is 5. surface tension of liquid] (1) 2TTR (2) TR TR (4) (3) TrR
other
telegram-61350
asked
Mar 30, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...13. A cylinderical vessel is filled upto a height h with ha liquid of density p. The cross sectional area of the vessel is A. From a small orifice near the ah botton, if some liquid flows out so that the level falls of the work done by gravity in doing so is 4. d. de ma ()Ar pg Ah pg (2) 4 (1) pqh Ah pg 8 (4) Ah pg 1. An open vessel containing the liquid upto a height of 15 m. A small hole is made at height of 10 m from the base of the vessel, then the initial velocity of efflux is (g = 10 m/s2) %3D (1) 1 m/s (2) 10/2 m/s (3) 5 m/s (4) 10 m/s...(13 and 14)
other
telegram-61345
asked
Mar 30, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...A satellite is in orbit around the earth in a circular orbit. If it is taken to an orbit of lower radius by remote control: (1) The gravitational force on the satellite and its speed increase. (2) The gravitational force on the satellite increases but its speed decreases. (3) The gravitational force on the satellite decreases but its speed increases. (4) The gravitational force on the satellite and its speed decrease. The Committee headed by the
other
telegram-61332
asked
Mar 30, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...A diatomic gas goes under the process shown in figure. During the path BC first heat is absorbed hy the gas then it is rejected. Upto what volume the gas absorbs heat? 4P 2P P V. 2V 3V. (1) 0. (2) 4 8Vo (4) 7V No 0. (3)
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telegram-61326
asked
Mar 30, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...20. A body of mass m thrown vertically upwards attains a maximum height h. At what height will its kinetic energy be 75% of its initial value? (a) (b) (d) 3 4
other
telegram-61322
asked
Mar 30, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Which of the following complexes exhibits the highest paramagnetic behavior ? where gly = glycine, en = ethylene Jiamine and bpy = bipyridyl moieties (At no : Ti= 22 V = 21! Fe = 26, Co = 27) A V (gly)2 (OH)2(NH3)21" B [Fe (en) (bpy)(NH3),1+ C [Co(OX)2(OH)21" 3+ D [Ti(NH3G]³*
other
telegram-61319
asked
Mar 29, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...AIPMT 2007 Q.67 CH3- CHC-CH2–CH, has a chiral centre. Which one of the following does not represent its R configuration? C2H5 А Н.с_ с_Ci C2H5 н_ с_сH, Ci C2H5 C1_ C _CH, H. CH; н_ с_сI C2H5 Q.68 0.5 molal agueous solution of a weak B.
other
telegram-61311
asked
Mar 29, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...9. Io be the photoelectric curent comesponds to incldent radiation (frequency v, intensity I) For another radiatton (frequency 2v, intensity 31) photo electricC current from same cathode willbe (1) 21. (2) 3I. (3) . (4) L.
other
telegram-61299
asked
Mar 29, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...38. The number of ways in which 5 similar pencils and 3 different pens can be distributed to 7 children where each child gets atleast one object is (a) 840 (b) 630 197 PA (d) 10 (c) 1596
other
telegram-61290
asked
Mar 29, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...X+1 log/2 log3 X-1
other
telegram-1568
asked
Mar 29, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Eleven apples are distributed among a girl and a boy. Then = which one of the following statements is true? (a) atleast one of them will receive 7 apples. (b) the girl receives atleast 4 apples or the boy receives atleast 9 apples.? (c) the girl receives atleast 5 apples or the boy receives atleast 8 apples. (d) the girl receives atleast 4 apples or the boy receives atleast 8 apples. 10 11 12...(Please solve it)
other
telegram-61288
asked
Mar 29, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Calculate the volume of 3.0 M HCl in mL needed to decompose 0.76g of a rock sample. Assume that the sample is pure mineral olomite CaMg(CO,)2 and you need 10% excess of the acid. Atomic mass: C= 12, 0=16, Mg - 24, Ca- 40] %3D Answer:
other
telegram-61286
asked
Mar 29, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...6. Find the charges on the three capacitors shown in figure (31-W3a). 4 µF -Q2 Q2 6 V 2 uF 2 µF 4μΕ 6 v Q-0, (Q,+ Q2) 5 µF T(Q,+ Q2) 5 μΕ ato 5 uF 6V (a) (b) Figure 31-W3 6,
other
telegram-61279
asked
Mar 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion).... If [x]2 - 3[x] + 2 = 0, ([.]→ G.I.F) Then xe (1) [1, 3} (2) [1, 3] (3) [1, 3) (4) (1, 3)
other
telegram-1566
asked
Mar 29, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...=6 is Solve %3D (1) (0,1]U[7,8)LE (2) (0,1]U[7,8)u{2,3, 4,5,6} (3) {2,3,4,5,6} (4) (0,8)
other
telegram-1564
asked
Mar 29, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...331 + 231 If x = 329 + 229 where [], represents greatest integer function then x is equal to (1) 2 (2) 8 (3) 20 (4) 9
other
telegram-1562
asked
Mar 29, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Q 85/180 Among the following highest oxidation state is shown by Ac Pa O Np
other
telegram-61256
asked
Mar 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...imals & Fractions, HCF & Question : OMcu Find the middle digit of the number 123456789101112.....997998999. ID: 1
other
telegram-61254
asked
Mar 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...Total number of configurational isomers of tartaric acid is (b) 3 (d) 5 (a) 2 (c) 4 (OJEE)
other
telegram-61251
asked
Mar 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...CH,OH HCl gas 1. LiAlH, B 2. Н.О 82. I+ H- CH,ОН 82. What is B : Он (1) (2) LOH НО он (3) н (4) (- СООН
other
telegram-61242
asked
Mar 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...The kinetic energy K of a particle moving along a circle of radius R depends upon the distance s, as K as?. The force acting on the particle is- (A) 2a- s2 2 (B) 2as 1+. R2 (C) 2as (D) 2a
other
telegram-61240
asked
Mar 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...ВУ A conducting square loop of side L and resistance R 12. moves in its plane with a uniform vełocity v perpendicular to one of its sides. A magnetic induction B constant in time and space, pointing perpendicular and into the plane of the loop exists everywhere. The current induced in the loop is eld 1t. Blv "(a) clockwise Blv (b) anticlockwise R 2Blv (c) anticlockwise an R ed (の Zero в х tic is hei pil х х. х х ス
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telegram-61238
asked
Mar 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...83. If in hydrogen atom, radius of nh Bohr orbit is r, frequency of revolution of electron in nth orbit is f,, choose the correct option. 'n In log (a) (b) log n fn log f1 (c) (d) Both (a) and (b) log n
other
telegram-61231
asked
Mar 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...Pinus seed cannot germinate and established 6. without fungal association. This is because: 12. [NEET-2019] (1) Its embryo is immature. acie (2) It has obligate association with mycorrhizae. (3) It has very hard seed coat. 13. sha (4) Its seeds contain inhibitors that present ** germination.
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telegram-61220
asked
Mar 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...18./Which value will go on increasing if a flaccid cell is placed in hypotonic solution? (1) Osmotic pressure (2) Solute potential (3) DPD (4) Both (2) and (3)
other
telegram-61218
asked
Mar 29, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...Fogen in NaN0 2 is: LAFMC 2006] 94 (a) +2 (Ъ) +3 (d) 7.5 95. The charge required for the reduction of 1 mole of MnO to MnO2 is: (c) +4 [AFMC 2006] (d) -3 (a) 1F (Ъ) ЗF [AIIMS 2006] (c) 5F 96. 1.520 g of the hydroxide of a metal on ignition gave 0.995 g of oxide. The equivalent mass of (d) 6 F metal is: (a) 1.520 0 59 g of the silver salt of an organic acid (molar mass =210) on ignition gave 0.36 g of pure (b) 0.995 [CPMT 2006] (d) 9.00 (c) 19.00 silver. The basicity of the acid is: (b) 2 [Kerala PMT 2006] (a) 3 (c) 1 (d) 4 (e) 5 98. An element, X has the following isotopic composition: 200 x:90% , 199 X:8.0% , 202 X:2.0% The weighted average atomic mass of the naturally occurring element X is closed to: [AIPMT 2007] (d) 199 amu (b) 201 amu (c) 202 amu (a) 200 amu [CPMT 2007] 19. Value of x in potash alum, K,S04 · Al, (SO4)3 24H,0 is: (b) 1 (d) None of these (c) 2 that will be needed to react with one mole of sulphide ion in JAIPMT 2007] (a) 4
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telegram-61212
asked
Mar 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...(a) What is the wavelength of the wave ? (b) What is the amplitude of the oscillating magnetic field ? C)Show that the average energy density of electric field is equal to the average energy density of the magnetic field. etric etic 10X 10 12 T] In a plane electromagnetic wave, the electric field oscillates sinusoidally at a frequency of 3-0x 10 Hz and amplitude 50 Vm-l. [Ans. Imm, 1-67x10-7 TL
other
telegram-1559
asked
Mar 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...13/4 Di2 aTu |i 210 35 Among the following, the coloured compound is [IIT JEE 2008] (b) K[Cu(CN),) (d) [Cu(CH,CN),JBF, (a) CuCl (c) CuF...(Please someone help !)
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telegram-61198
asked
Mar 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...(u) 300 nm (J & K CET) 60 s3. White light reflected from a soap film (Refractive he index = 1.5) has a maxima at 600 nm and a minima at 450 nm with no minimum in between. Then the thickness of the film is x 10 m. (a) 1 (c) 3 (b) 2 (d) 4 (Karnataka CET) lit evneriment the distance between...(Pls help me guyzz)
other
telegram-61196
asked
Mar 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...25. Three waves of equal frequency having amplitudes 10 um, 4 um and 7 µm arrive at a given point with a successive phase difference of t/2. The amplitude of the resulting wave is um in given by (a) 7 (c) 5 (b) 6 (d) 4
other
telegram-61194
asked
Mar 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...Number of values of 'a' for which the curves y = ax + ax + and x = ay? + ay + touch each 24 24 other, is (A) 2 (C) 4 (B) 3 (D) 0
other
telegram-61185
asked
Mar 28, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Two towns A and Bare connected by a regular bus service with a bus leaving in either direction every T minutes. A man cycling with a speed of 20 kmh in the direction Ato Bnotices that a bus goes past him every 18 min in the direction of his motion, and every 6 min in the opposite direction. What is the period T of the bus service and with what speed (assumed constant) do the buses ply on the road? (a) T = 9 min, speed 40 kmh (b) T = 10 min, speed 40 kmh (c) T 9 min, speed 20 kmh (d) T = 10 min, speed = 20 kmh -1 %3D -1 %3D -1
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telegram-61181
asked
Mar 28, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...(A) 8 m (C) 12 m 10V3 m/s A particle is projected from ground at an angle 60° with horizontal with a speed of 10v3 m/s from point 10v3 m/s A as shown. At the same time the sufficient long wedge is made to move with constant velocity of 10V3 towards right as shown in figure. The time in second after which particle will hit the wedge will be. (g = 10 m/s) (A) 1 sec |(C) 3 sec 60° %3D (BY 2 sec (D) it will never collide on the wedge ech the
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telegram-61166
asked
Mar 28, 2020
by
balaji.thirumalai
0
answers
(chatquestion)...Question .5 M.M 4.00 N.M 1.00 Variation of potential energy of a particle in space is represent in the following graph. If the particle is released from rest at origin, then it will starts to move x(m) v Correct Answer A Along negative x-axis B Along positive x-axis The particle will stay at origin NEXT >...(Photo from
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telegram-61140
asked
Mar 28, 2020
by
balaji.thirumalai
1
answer
(chatquestion)...2 -VitOsI...(How to solve this one ?)
other
telegram-61133
asked
Mar 28, 2020
by
balaji.thirumalai
1
answer
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