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(chatquestion)...(A) 42 2V2 - V7 + 3] [2/2-17+ V3] 2/2 (B) 4/2 2V2 + V7 - V3] V21-1] R (C) R (D) 10 A silicon diode requires minimum current of 2mA to be above its knee point of its (V-I) characteristics. Assuming voltage across diode is constant above its knee point. The value of maximum resistance that should be connected in series with diode and battery of 10 V such that diode operates above its knee point. (Assume resistance of diode to be zero) (A) (B) 2. 5 k2 5.35 k2 4.65 k2 9.30 k2 Light of intensity I falls parallel to the axis on the curved surface of a perfectly reflecting right circular cone having semi vertical angle 0 and base radius R as shown in figure. The value of force acting on the cone 3.

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...A 8 Yo LTE l 14% O 6:51 pm LTĚ 1/1 D) Cell constant values of conductivity cells depend on the solution filled in the cell 100 ml of 0.IM AGNO, aqueous solution is electrolyzed between inert electrodes using 5x10 Faraday of electricity. Identify the correct statement(s) regarding this. (volume changes are negligible) ABD A) Volume of o, liberated at STP at anode is 28 mL Mass of Ag deposited at cathode is 0.54 g C) Volume of H, liberated at STP at cathode is 56 mL. D) pll of the resultant solution decreases during the progress of electrolysis

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...A silicon diode requires minimum current of 2mA to be above its knee point of its (V-I) characteristics. Assuming voltage across diode is constant above its knee point. The value of maximum resistance that should be connected in series with diode and battery of 10 V such that diode operates above its knee point. (Assume resistance of diode to be zero)

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...Which of the following has less water solubility? 9. (C) Butanal (D) Propanal (A) Methanal (B) Ethanal 10. Which product is formed with Hinsberg reactant with 2" amine ? (A) 1" sulphonamide (B) 2" sulphonamide

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...Which of the following has less water solubility? 9. (C) Butanal (D) Propanal (A) Methanal (B) Ethanal 10. Which product is formed with Hinsberg reactant with 2" amine ? (A) 1" sulphonamide (B) 2" sulphonamide

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...When equimolar aqueous solutions of glucose, sodium chloride and barium nitrate are compared vapour pressure of the solutions will be in the following order :- (1) Glucose > NaCl > Ba(NO,), (2) Glucose = NaCl = Ba(NO,), (3) Ba(NO,), > NaCl > Glucose (4) NaCl > Ba(NO), > Glucose the %3D %3D

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...8. Which of the following bond possessing compounds are known as carbonyl compounds ? (B) C-0 (C) C-OH (A) C=0 (D) C-O-0 9. Which of the following has less water solubility?

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...மாமகாள்பம் க Hoitomntoro Q-Ruonating teuctwre of NO,-

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...Which of the following ethers will not form peroxide ? 7. (C) (D) (A) (B) Which of the following bond possessing compounds are known as carbonyl compounds? 8.

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...When equimolar aqueous solutions of glucose, sodium chloride and barium nitrate are compared vapour pressure of the solutions will be in the following order :- (1) Glucose > NaCl > Ba(NO,), (2) Glucose = NaCl = Ba(NO,), (3) Ba(NO,), > NaCl > Glucose (4) NaCl > Ba(NO), > Glucose the %3D %3D

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...Which of the following ethers will not form peroxide ? 7. (C) (D) (A) (B) Which of the following bond possessing compounds are known as carbonyl compounds? 8.

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...distribution of the 52. A uniformly distributed space charge fills up the space between large parallel plates separated by a distance d. The potential difference between the plates is equal to Ap. At what value of charge density p is the field strength in the vicinity of one of the plates equal to zero? What will then be the field strength near the other plate? charged ball depends only on the distance

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...Date S. 4. 2. 20 190 30 19C 19 30 e 79c 30

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...sertes |e * series witthc 3C 30/5 2C 2C 24C 3पर

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...2८ ( हो हैंश " र्व े | चैलो ८ ) [2, 2]

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...Eeomple 3.13 All the edges of a block with parallel faces are megual. Its longest edge is four times its shortest edge. Find th mtio of the maximum to the minimum resistance between parallel faces.

asked Jan 22, 2020 by balaji.thirumalai

1 answer

(chatquestion)...What is the equivalent capacitance across the battery? 59 (B) 30 79 -C (A) 30 21 (D) 30 41 (C) 30

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...Solve 2 cos? 5. = 2* + 2* Solve sin?x + cos? y+ sin? z 6. 3 cosec?u. The number of solutions of 2 sin x + 3 cos x = 10 is/are (A) 0 (C) 2 (B) 1 (D) 4

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...yoy b 4bendo +2

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...yoy b 4bendo +2

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...Total number of possible geometrical isomers in [Co(NH,),(N0,),]* is :- (1) 2 (2) 4 (3) 6 (4) 8 ossible

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...38. A cubical room is formed with six plane mirrors. An insect moves along the diagonal of the floor with uniform speed. The velocities of its images in two adjacent walls glare 20/2 cm s, then the velocity of the image formed by the roof is :-1 6. (a) 10/2 cm s a (c) 20/2 cm s -1 nsl -1 (b) 20 cm s (d) 40 cm s -1 (UP CPMT

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...If cos(A – B) = 1/2 and sin(A + B) = 1/2, find the smallest positive values of A ana B and alea their most general values. %3D eino cosA and tan A are in G.P. then find the general solution for 0.

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...Distance between the centres of two rings is a. The masses of these rings are M and 4M. A body of mass m is fired straight from the centre of the heavier ring. What should be its minimum initial speed to cross the centre of lighter ring? The radius of the both ring is R. (Assume a>>R). RI the rings

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...istance of 100 in series (20 88 mA T (B 8. The output Y of the logic circuit given b low is, In case of a bipolar transi se current is approximately 222µA Y. (E Bo In the given circuit, the pective outputs at Y in the (A) A+B (B) A (C) (Ā + B).Ā (D) (A + B).A (201 1.1 EDUDI DUDIGM 58 Get access to solutions of archives at www.edudigm.in/archives an IIT Kharagpur alun T Kharaspur alumni initiotive

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...A cylindrical beam of diameter (d = R) is incident on a glass hemisphere of radius R and refractive index (u = V2) on the curved surface 1. symmetrically as shown in the figure. The radius of circular bright spot formed on the flat surface of the hemisphere is: 2/2 - 17 + V3 4/2 (A) 2/2 - 17 + V3 2/2 (B) v3] (C) 45 212 + V7 - V3 R T0L V21 -1] (D)

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...AL 76. In the adjoining figure the frequency of oscillation for a mass M will be proportional to: K2 K, (M) el

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...find the number of ways of selecting 15 balls consisting of 5 black 5 blue and 5 white balls from a box which contains 6black 7 blue and 8 white balls?

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...31. Stress-Strain graph for two wires A and B of equal lengths are shown below. Find the ratio of (i) Young's Modulus of the material of A and B Strain> (ii) The elongations produced under same stress 10okg

asked Jan 22, 2020 by balaji.thirumalai

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(chatquestion)...In the circuit shown, switches S, and S, have 6. been closed for a long time S, S2 12V 62 10µF 72 4V (1) Charge on the capacitor is 100 µC (2) Charge on capacitor is 20 µC (3) Charge on capacitor increases to 120 µC if one third of gap of the capacitors plates is filled with a di-electric (K = 3) of same area %3D (4) Charge on capacitor remains unchanged if one third of gap of capacitor's plates is filled with a di-electric (K = 2) of same area %3D

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...Correct order of reactivity towards ESR is 55. сн, CH, (ii) (i) OMe СНО СНО (iv) NO, (1) i > iii > ii > iv (2) ii > i > iii > iv (3) i > iv > iii > ii (4) iv > ii > iii > i

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...5. P, is a basis for polynomials of degree 2. ie. it contains a constant, a linear term and a quadratic term, P: = (1,z, r). In P, determine the component vector of p(x) = 5+7 - 3r relative to the following: (a) The standard (ordered) basis B= {1,r,z). [5 marks) (b) The ordered basis C- (1+1,2 + 3z, 5+x+). (5 marks)

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...then' Equipotential foece. ace 8 ] Oswaal CBSE Chapterwise & Topicwise Question Bank, PHr S Short Answer Type Questions-l AI Q. 1. Five charges, q each are placed at the corners of Ans. At P on 29, force due to q is to the to -3g is to the right. a regular pentagon of side a. (i) What will be the electric field at O if the charge from one of the corners (say A) is removed ? (ii) What will be the electric field at O if the charge q at A is replaced by - q ? R [SQP 2017] [NCERT Exemplar] 29 Απερχ. 47 (d + x) = 3» 2x-2dx - d = 0 As the negative charge -3g, hence it is unaccept 3d d X =- (1+ 3) %3D along OA Ans. (i) Απερ [CBSE 29 Q. 3. A small metallic sph (ii) 4 TEO along OA located at the centre large uncharged me [CBSE Marking Scheme, 2017] the charges on the in shell. Write the exp: Commonly Made Error • Some candidates find resultant force F as a scalar SHOT ON RÉDMEYBU resultant force is equal to AlvDUALUDAMERArces. the point P1. Dotailed Answer:

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...(4) 1.3 x 10" g The equivalent conductance of solution of a weak monobasic acid is 8.0 mho cm? and at infinite 32 11. dilution is 400 mho cm?. The dissociation constant of this acid is : [AIPMT 09] (4) 1.3 x 10 g (3) 2.4 x 10$ g (2) 1.25 x 10-6 (1) 1.25 x 10 5 Given 12

asked Jan 21, 2020 by balaji.thirumalai

1 answer

(chatquestion)...the following results were obtained for a set of data: Suppose E(x-X) (y-y)= 20, E(x- x) 20, Z(y-7)-80, X = 5, y 10, n 12 Then for the regression line Y-Bo +B,x, the value of Bo equals. मान लीजिए कि किसी समंक-समुच्चय में निम्नलिखित परिणाम पाये गये E(x-)(y-y)= 20, E (x- X) 20, E(y-y)-80, x-5,7-10, n 12 तो समाश्रयण रेखा Y-o+ B,x, के लिए Bo का मान होगा : (1) -3 (2) 2 (3) 5 (4) 10 eient hatween the marks in physica and

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...what is the electrostatic force between tue proton and electron in the hydrogen atom given that the charge of the proton is 1.602×10^-19c and the charge of an electron is 1.602×10^-19c .the atomic radius is 10^-4.given the mass of a proton of electron as 1.67×10^-27kg and 9.1×10^-31kg.find the 1) gravitational force between them 2)the electrostatic force between them 3)the ratio of f and fg convert the answer you get

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...what is the electrostatic force between tue proton and electron in the hydrogen atom given that the charge of the proton is 1.602×10^-19c and the charge of an electron is 1.602×10^-19c .the atomic radius is 10^-4.given the mass of a proton of electron as 1.67×10^-27kg and 9.1×10^-31kg.find the gravitational force between them

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...Derive an expression for the moment of inertia of a uniform circular disc about an axis passing through its centre and perpendicular to its plane. of o rolling disc

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...Pre-Medical: Physics EN 23. The acceleration of a particle in SHM at 5 cm from its mean position is 20 cm/sec?. The value of angular frequency in radians/sec will be : (2) 4 (3) 10 (1) 2 (4) 14 24. The amplitude of a particle in SHM is 5 cms and d ic T At a displacement of 3 cms

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...19. As shown in arrangement, waves with identical wavelengths and amplitudes that are initially in phase travel through different media, ray 1 travels through air and ray 2 through a transparent medium for equal length L, in four different situations. In each situation the two rays reach a common point on the screen. Ray 2 Ray 1– The number of wavelengths in length L is N, for ray 2 and N, for ray 1. In the following table, values of N, and N, are given for all four situations. The order of the situations according to the intensity of the light at the common point in descending order is Situations 2 3 4 2.25 1.80 3.00 3.25 N2 (a) I-1>1,>I (c) I>1,>I3>I, 2.75 2.80 3.25 4.00 (b) I,>I3=14>I, (d) 1,>I;=14>I¡

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...8. 4. An object, initially at rest, explodes into three fragments. The momenta of two parts are 2pi and pj where p is a positive number. The momentum of the third part 9. (1) will be of magnitude 3p inclined at tan with 2. X-ахis (2) will be of magnitude 5p inclined at tan-'(2) with 10. х-ахis (3) will be of magnitude 3p inclined at t-tan¬'(2) with х-ахis (4) will be of magnitude 5p inclined at with x-axis X- tan

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...The electron in hydrogen atom is in the first Bohr's orbit (n-1). The ratio of electronic transition energies, AE(n = 1 -n = 3)10AE(n =1n= 2)is

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...61. A diverging lens of focal length 20 cm and a converging mirror of focal length 10 cm are placed coaxially at a separation of 5 cm. Where should an object be placed so that a real image is formed at the object itself?

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...In AARBL, Pis 08thocenEde and Q is circumce 2 ০e that %3D

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...Which one of these ions absorbs energy from visible spectrium :- (2) [Cu(NH,),I•2 (4) [Co(H,O),-3 (1) [Cu(NH,),I* (3) [Zn(H,O),J•2

asked Jan 21, 2020 by balaji.thirumalai

1 answer

(chatquestion)...NUMERICAL PROBLEMS 17. The instantaneous value of current in an AC circuit is I = 2 sin (100 nt + T/3) A. At what first time, the current will be maximum ? (1 M) e circuit is given by

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...The compound haring leant value of pko is- (b) o (C) di)

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...Q.2 Carbonic acid (H,CO2),a diprotic acid has K1 = 4.0 × 10¯7 and Ka, =7.0 × %D a1 . What is the [HCO,] of a 0.025 10-11 M solution of carbonic acid? A) 7.8 x 10¯3 B 6.6 x 10-4 C 10-10 1.0 x 10-4 SKIPPED SEE SOLUTION

asked Jan 21, 2020 by balaji.thirumalai

1 answer

(chatquestion)...What wilu be the ph of 0.l M aqueous. solution of NaHz POu solution '9 (4iven Ka,=7.5>103 kq,z 6-2Y103 dj 5.20 C) 4.94 a) 9-60 6.) Y066

asked Jan 21, 2020 by balaji.thirumalai

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(chatquestion)...जो के दिझिरी प्रयोग में व्यतिकरण फ्रिंजों को प्राप्त करने के लिए, 650 nm तथा 520 nm तरंगदैर्यों के प्रकाश-पुंज का उपयोग किया गया। (a) 650 nm तरंगदैर्घ्य के लिए परदे पर तीसरे दीप्त फ्रिंज की केंद्रीय उच्चिष्ठ से दूरी ज्ञात कीजिए।

asked Jan 21, 2020 by balaji.thirumalai

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