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(chatquestion)...66.The radius of cross section of a conductor decreases linearly from one end to the other. The temperature of the two ends is 2T and T respectively. The temperature of the mid-point is- 3T (1) less than 3T (2) equal to 3 T (3) greater than 2 (4) can not be concluded

asked May 29, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Question 8- Express the given matrix as the sum of a symmetric and a skew-symmetric matrix. [2 3 17 1 2 4 1 2 T

asked May 29, 2020 by balaji.thirumalai

1 answer

(chatquestion)...6. Calculate the pressure needed to prevent osmosis when 10.0 g CaCl2 is added to 100 mL of water?

asked May 29, 2020 by balaji.thirumalai

1 answer

(chatquestion)...2. Which ion would you expect to be more heavily hydrated? 1. K', Са2+ 2. Na, K 3. Cu2, Cu +.

asked May 29, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A Consider A ACB, right-angled at C, in which AB = 29 units, BC = 21 units and Z ABC = 0 %3D (see Fig. 8.10). Determine the values of 29 (i) cos? 0 + sin² 0, (ii) cos? 0 – sin 0. B 21 Fig. 8.10

asked May 29, 2020 by balaji.thirumalai

1 answer

(chatquestion)...O- Which tegim of the AP:21, 18,15,.. is -81? Al so, is teim 0? 6Give eason for your any answert.

asked May 29, 2020 by balaji.thirumalai

1 answer

(chatquestion)...SLA7 (n) 11. In Figure 1-Q4, the current through the resistor AB is 30 A 60 B. 42 Fig. 1-04 (a) 0.5 A (c) 0.167 A (b) 0.67 A (d) 0

asked May 29, 2020 by balaji.thirumalai

1 answer

(chatquestion)...awhen a stale and Connected in sedies to the batby emf 3v through gulvanometer having 30 divin l00 resistahce is a desistance 2hows fult Scale defection find the figure meh't t of the galvoromees se micooampere.

asked May 29, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Differentiate between molality and molarity of a solution. What is the effect of change in temperature of a solution on its molality and molarity?

asked May 29, 2020 by balaji.thirumalai

1 answer

(chatquestion)...by the mudual farce d electorostatic re pulsion? 4 the chaage Ahb radi A and B are hegligible Compared Dto the dei tance 61) Twd insulted charged copper Sphenes A.and B have their Centres separated distance fdenstatic repulsions ol So cm. what ů a on "each is 6is X107c and i) what in the force each Sphode is chagedl above them is halved ? y defulsion double the dis tance bluw amount and the

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...27. In an a.c. circuit, the instantaneous e.m.f. and current are given bye = 100 sin 30 t i-20sin 30t - In one cycle of a.c., the average power consumed by the circuit and the wattless current are, respectively: 50 (1) .0 (2) 50, 0 (3) 50, 10 1000 10 (4)

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...25. The density of a material in the shape of a cube is determines by measuring three sides of the cube and its mass. If the relative errors in measuring the mass and length are respectively 1.5% and 19%, the maximum error in determining the density is: (1) 2.5% (2) 3.5% (3) 4.5% (4) 6%

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...21. A silver atom in a solid oscillates in simple harmonic motion in some direction with a frequency of 10/sec. What is the force constant of the bonds connecting one atom with the other ? (Mole wt. of silver = 108 and Avagadro number 6.02 x 10 gm mole) (1) 2.2 N/m (2) 5.5 N/m (3) 6.4 N/m (4) 7.1 N/m

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...20. The angular width of the central maximum in a single slit diffraction pattern is 60°. The width of the slit is 1 um. The slit is illuminated by monochromatic plane waves. If another slit of same width is made near it, Young's fringes can be observed on a screen placed at a distance of 50 cm from the slits. If the observed fringe width is 1 cm, what is slit separation distance ? (Le. distance between the centres of each slit.) (1) 75yum (2) 100um (3) 25µm (4) 50 um

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...15. A granite rod of 60 cm length is clamped at its middle point and is set into longitudinal vibrations. The density of granite is 2.7x10 kg/m and its young's modulus is 9.27×10"Pa. What will be the fundamental frequency of the longitudinal vibrations ? (1) 10 kHz (2) 7.5 kHz (3) 5 kHz (4) 2.5 kHz

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...12. A parallel plate capacitor of capacitance 90 pF is connected to a battery of emf 20 V. If a dielectric material constant K = is inserted between the plates, the magnitude of the 3 induced charge will be : (1) 2.4 nC (2) 0.9 nC (3) 1.2 nC (4) 0.3 nC

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...10. The reading of the ammeter for a silicon diode in the given circuit is : (1) 11.5 mA (2) 13.5 mA (3) 0 (4) 15 mA

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...2. The mass of a hydrogen molecule is 3.32x10 kg. If 10ª hydrogen molecules strike, per second, a fixed wall of area 2 cm at an angle of 45° to the normal, and rebound elastically with a speed of 10' mis, then the pressure on the wall is nearly: (1) 2.35×10° N/m 2) 4.70×10° N/m² 3) 2.35x10'N/m² 4) 4.70x10'N/m² at a

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...90. According to molecular orbital theory, which of the following will not be a viable molecule ? (1) H; (2) H? (3) H (4) Hes

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...1. A capacitor made of two parallel plates each of the plate A and separation d, is being charged by an external sinusoidal time varying source. Show that, the displacement current inside the capacitor is the same as the current charging the capacitor.

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...7. Dry ice is solid carbon dioxide. A 0.050 g sample of dry ice is placed in an evacuated 4.6 L vessel at 30°C. Calculate the pressure inside the vessel after all the dry ice has been converted to CO2 gas. a) 6.14 atm b) 0.614 atm c) 0.0614 atm d) 6.14 x 10 atm

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Q. Mictobes Can be used to docrease the use and pesticide can be accomplished. of chemical farhliseos T how this Explain

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...At 27°C a sample of ammonia gas exerts a pressure of 5.3 atm. What is the pressure when the volume of the gas is reduced to one-tenth of the original value at the same temperature? a) 0.53 atm b) 5.3 atm c) 53 atm d) None of these...(Photo from Swarnalatakabi)

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...0- In a particolar apecien, majority of the plant bear purple flowern. Very 'Jew plant have white flowen No intenmediate coloun acic obnerved. If a plant baning giver. you pure pre breed yor the trait? you purple flowena, how wold naentain that it to Explain thin Atatement?

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Show that the limiting value of The argle f pscism is twice its caitical anglo Hence define Coritical angle 2

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Question 6. a. What is dry ice? b. Why does BF3 behave as a Lewis acid? c. Carbon forms millions of compounds due to its self-linking property to form long chains and big rings. 1. Name the above property of carbon. 2. Give the reason for the above property of carbon.

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A thin converging lens has focal length () when illuminated by violet light. State with reason how the focal length of the lens will change if violet light is replaced by red light

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...52 Two cm thick ice layer on surface of a lake is formed in 2 days Additional time required for thickness of ice layer to be 3cm is- (1) 2.50 days (3) 4.50 days (2) 3.75 days (4) 5.75 days

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Yellow light (A = 6000Å) illuminates a single %3D slit of width 1 x 10-4 m. Calculate (i) the distance between the two dark lines on either side of the central maximum, when the diffraction pattern is viewed on a screen kept 1.5 m away from the slit; (ii) the angular spread of the first diffraction minimum.

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Correspeonding ind the radian measures to the fallowing degree measuses : 14)-47°30

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Which part of electromagnetic spectrum has largest penetrating power?

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...78. A straight line through a fixed point (2, 3) intersects the coordinate axes at distinct points P and Q. If O is the origin and the rectangle OPRQ is completed, then the locus of R is: (1) 3x +2y = 6 (2) 2x +3y = xy (3) 3x +2y = xy (4) 3x +2y = 6xy

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...6.Write resonance structures of (a)CH3CO0 (b) CgH;NH2.

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...sin’ xcos² x 74. The integral (sin* x + cos® xsin? x +sin? x cos² x + cos® x) is equal to : 1 (1) 3(1+ tan x) -1 (2) 3(1+ tan" x) +C (3) 1+cot x +C -1 (4) 1+cot x +C

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...> Calculate the mann peicendeicje (CGH6) and cambon tetrqehlon'de ceciA) 1 229 o benzene tn dinnowed im 1ZZ 9 carbon tetrachloride. G1 bencure

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...69. Let A be the sum of the first 20 terms and B be the sum of the first 40 terms of the series 1' +2-2° +3 +2+4 +5° + 2+6° +. If B-2A=100 2, then 2 is equal to: 232 (1) (2) (3) (4) 248 464 496

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Date Page Q Express the sratios cos A tan A and sec A in Q. teoms / Sin A.

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...Q. 2 Find the range of each of the following functions : V3x2 +1 (1) f(x) = (n (sin-'x) (ii) f(x) = sin-1 5x2 +1...(Plz give working)

asked May 28, 2020 by balaji.thirumalai

0 answers

(chatquestion)...23. Consider two thin identical conducting wires covered with very thin insulating material. One of the wires is bent into a loop and produces magnetic field B1, at its centre when a current I passes through it. The ratio B : B, is: [Online April 12, 2014] (c) 1:9 (a) 1:1 (b) 1:3 (d) 9:1

asked May 28, 2020 by balaji.thirumalai

1 answer

(chatquestion)...1. A block of mass 5 kg is at rest on the fixed wedge on the truck, as shown in figure. If truck is moving with constant velocity 2 m/s, then workdone by the friction force on block in first 2 second w.r.t ground is (take g = 10 m/s?) 5 kg →2 m/s 37° (1) 48 J (2) – 96 J (3) – 48 J (4) Zero

asked May 28, 2020 by balaji.thirumalai

0 answers

(chatquestion)...23. On a large slippery ground, a boy left his dog sitting and walks away with a constant velocity v = 2.0 m/s. When he is xo = 199 m away from the dog, the dog decides to catch him and thereafter move together. The dog cannot develop acceleration more than a = 2.0 m/s? in any direction. In what minimum time will the dog meet the boy?

asked May 28, 2020 by balaji.thirumalai

0 answers

(chatquestion)...6. =3 11...(Please anybody!?)

asked May 27, 2020 by balaji.thirumalai

0 answers

(chatquestion)...1- ix 10.91 If 1+ ix = a -- ib and a + b = 1, where a, b eRand i = -1, then x is equal to %3D 2a 26 2a 2b (a) (1+ a)? + b2 (b) (1+ a)? + b² (1+ b)² + a² (d) (1+ b)? + a?

asked May 27, 2020 by balaji.thirumalai

1 answer

(chatquestion)...25. A train passes a platform with a uniform speed. A boy standing on the platform decides to estimate length of a coach and speed of the train. For this purpose, he first runs with a constant speed of u = 10 km/h in the direction of the motion of the train and passes by a coach in n1= 30 steps. Then he turns back, runs at the same constant speed and passes by a coach in n2 = 20 steps. If the boy covers a distance l = 1.0 m in each step, answer the following questions. (a) What is the speed of the train? (b) What is the length of a coach?...(Photo from Swarnalatakabi)

asked May 27, 2020 by balaji.thirumalai

1 answer

(chatquestion)...A bell es throun werli calley eufwand at AusSomG Found wthe time interwal When oroses mark 20m

asked May 27, 2020 by balaji.thirumalai

1 answer

(chatquestion)...2. Sam used to walk to school every morning, and it takes him 20 min. Once on his way, he realized that he had forgotten his homework notebook at home. He knew that if he continued walking to school at the same speed, he would be there 8 min before the bell, so he went back home for the notebook and arrived the school 10 min after the bell. If he had walked all the way with his usual speed, what fraction of the way to school had he covered till the moment he turned back? (a) 8/20 (c) 10/20 (b) 9/20 (d) 12/20

asked May 27, 2020 by balaji.thirumalai

0 answers

(chatquestion)...IA panticle tals hon. It com idese hewe amas accedertig tamenod so couen looom cdeacceration cembe alsO5ndo)

asked May 27, 2020 by balaji.thirumalai

1 answer

(chatquestion)...The reading of an ideal voltmeter in the circuit shown is 202 30Ω ww ww 302 202 2V (1) 0.6V (2) OV (3) 0.5 V (4) 0.4 V

asked May 27, 2020 by balaji.thirumalai

1 answer

(chatquestion)...17. 50 g ice at -20°C is added to 5 g water at 4°C in a thin insulated vessel. The final temperature, is nearly- (1) 2°C (3) -2°C 2001 (2) 0°C (4) -10°C

asked May 27, 2020 by balaji.thirumalai

1 answer

(chatquestion)...13 IF AD I BC Prone that AB?+ cD?

asked May 27, 2020 by balaji.thirumalai

1 answer

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