Frequencies Used to Convey Speech Over Telephone Lines Fall Between What Two Frequencies Below?ã¢â‚¬â€¹

Question list of Math, Physics, chemical science, English, political science, Biological science, EVS, Sociology, Psychology, accountancy, economics and science for CBSE ICSE SSC SSLC boards - Dated: 2018-02-22

2An alternating voltage of frequency f is practical across a series LCR circuit Let fr be the resonance frequency for the excursion Will the current in the excursion lag, atomic number 82 or remain in phase with the practical voltage when Explain your answer in each instance Define electric line of force and requite its two important properties Ascertain the terms Magnetic Dip and Magnetic Declination with the aid of relevant diagrams Find the wavelength of electromagnetic waves of frequency 5 x 1019Hz in gratuitous space Give its 2 applications What is an analog signal and a digital point ? How can an analog signal exist converted into & digital indicate? A T V tower has a height of 400 m at a given identify Calculate as coverage range, if the radius of the earth is 6400 km With the help of a diagram, show the biasing of a light emitting diode (LED) Give its two advantages over conventional incandescent lamps An a c voltage of 100 Five, 50 Hz is connected across a 20 ohm resistor and 2mH inductor in series Calculate impedance of the circuit, rms current in the circuit A galvanometer has a resistance of Information technology gives full scale deflection with a current of 2 mA Calculate the value of the resistance needed to catechumen it into an ammeter of range 0-0 3 A The output of an OR gate is connected to both the inputs of a NAND gate Draw the logic circuit of this combination of getes and write its truth table 2 point charges and are separated past a altitude of 1 k in air Summate at what point on the line joining the two charges is the electric potential null The output of a ii-input NOR gate is fed to a NOT gate Draw the logic circuit of this combination of gates and write the truth table for the output of the combination for all inputs Write whatsoever iv characteristics of electromagnetic waves Give 2 uses each of Radio-waves Micro-waves Explicate with the help of a labelled diagram the underlying principle and working of a step-upwardly transformer Why cannot such a device be used to step-up d c voltage ? Country the laws of radioactive decay Establish a mathematical relation between half-life period and disintegration constant of a radioactive nucleus How is the mutual inductance of a pair of coils affected when separation between the coils is increased? the number of turns of each roll is increased ? a thin iron canvass is placed betwixt the ii coils, other factors remaining the same? Explain your reply in each case Define the terms threshold frequency and stopping potential in relation to the phenomenon of photoelectric effect How is the photoelectric current affected on increasing the frequency intensity of the incident radiations and why? State Gauss theorem Use this theorem to obtain the expression for the electrical field intensity at a point due to an infinitely long, thin, uniformly charged directly wire and at any point outside a uniformly charged thin spherical shell Explain forward biasing, reverse biasing of a P-Northward junction diode With the help of a excursion diagram, explain the use of this device every bit a half - wave rectifier Define cocky-inductance and give its S I unit Derive an expression for self- inductance of a long, air-cored solenoid of lengthl,radius r, and having N number of turns

9ane Read the following passage carefully and answer the questions that follow information technology: one A affliction of the brain neuron yet I circle is , or formation of a cyst in the delicate organ decision-making the primal nervous system that was known to bear on few people till about 5 years agone has get common amid all ages Neurologist are concerned with the rapid rising in the incidence of neurocysticrcosis, the status in whichtapeworms attack the brain sometimes manifesting as convulsions or severe headaches or even causing permanent harm to vision But there are more worrying aspects to the affliction Water and greenish leafy vegetables, specially those grown in fields are fast condign that most favoured route for tapeworms to enter human bodies 2 Neurologists are now asking people to avoid raw vegetables Neurocysticircosis is a parasitic infection of the central nervous system The eggs of the tapeworms brand their mode from the intestines to the bloodstream and ultimately to the encephalon The worms tin can wreck havoc inside the brain depending on the site of invasion Lesion caused by neurocysts tin bear upon sight, damage the spinal chord and even cause psychiaatric illnesses and seizures 3 Tapeworm infection are passed in the bowel of a person who is infected the egg travels through the food pipage to the stomach Information technology has three pairs of hooklets and in the pocket-size intestine, it burrows though the wall From here it enters the blood stream and gets deposited in three major organs, the brain,optics and muscles The illness is said to exist most dangerous if not treated timely Seizures and headaches are the most common symptoms In the muscles it may cause lumps under the skin Although rare, cysticerci may float in the eyes and crusade disturbed vision 4 People especially children have get and so witting virtually their diet that they want to consume more salads Raw vegetables should definitely exist boiled The infection is found only on outer surface of vegetables so peeling them tin exist a major prevention 1 On the basis of your reading of the passage, respond the post-obit question by choosing the best of the given choices (a) why has neurocysticircosis get common in contempo times ? (1) due to stress (2) due to incorrect food habits (3) due to tapeworms attacking the brain (4) due to life style changes (b) Why practise neurologists ask people to avert raw vegetables? (1) because tapeworm enters human bodies through vegetables? (ii) because raw vegetables contain pesticides (3) because most People do non wash vegetables (4) vegetables are difficult to digest (c) In what manner is neurocysticircosis damaging for human beings? (one) lessons caused by neurocysts tin can affect digetion (2) lessons can affect sight, and spinal chord (iii) tin can affect the blood stream and intestines (4) all the above (D) what are the two mutual symptoms of this infection? 01 (ane) disturbed vision and indigestion (2) muscle lumps and pain in joints (three) disturbed vision and headaches (four) seizures and headaches (E) Find the antonym of the discussion modest : 01 (ane) footling (2) large (3) major (four) highest (F) Observe the word in the passage which ways abnormal growth (ane) cyst (2) organ (3) convulsions (4) arrangement 01 ii (a) Answer the following questions briefly (i) In what way is neurocysticircosis damaging for man beings? 01 (2) What are the 2 common symptoms of this infection? 01 (3) what two precautions tin can exist taken by people to avert this infection? 01 (4) Why can peeling exist a major prevention? (b) Discover word from the passage which mean the following (ane) a growth containing liquid in the torso 01 (2) neural

108Let f: i, 3, 4 → 1, 2, 5 and one thousand: ane, 2, v → 1, 3 be given by f = 1, 2, three, 5, 4, 1 and thou = 1, 3, 2, 3, 5, ane  Write gof

152xvi

333

407Solve this: Q242 Ashok, Bhim and Chetan were partners in a firm sharing profits in the ratio of three : 2 : 1 Their Balance Sail as on 31st March, 2015 was as follows: Liabilities Rs Avails Rs Creditors Bills payable Full general Reserve Capital letter A/cs : Ashok 2,00,000 Bhim one,00,000 Chetan 50,000 1,00,000 40,000 lx,000 3,l,000 Land Building Plant Stock Debtors Banking company 1,00,000 ane,00,000 2,00,000 80,000 60,000 ten,000 five,50,000 5,50,000 Ashok, Bhim and Chetan decided to share the future profit equally, due west e f 1st April, 2015 For this it was agreed that: (a) Goodwill of the firm be valued at Rs 3,00,000 (b) Land be revalued at Rs ane,lx,000 and edifice exist depreciated by 6% (c) Creditors of Rs 12,000 were non probable to be claimed and hence exist written off Fix Revaluation Account, Partners Uppercase Accounts and Rest Canvass of the reconstituted firm

479Q 13

560tell me the solution of those 6 questions one  If fx=3x+6, and so find the zero of fx2  Which term of the AP 15,27,39,  volition exist 144 more than its 54th term?iii  If △ABC~△PQR,ar△ABCar△PQR=94 cm and PQ = 8cm, and then find the value of AB 4  A circle inscribed in a △ABC touches the sides AB,BC and CA at P,Q and R respectively  Find BC, given that AB=14 cm, AR=6 cm and RC=7 cm 5  If sec A=2, where A is acute, then notice value of tan A 6  An electrician needs to achieve a point 1 6m below the top of the pole of height 8m to undertake the repair work  If he has to incline the ladder at 60° angle to horizontal, and then what should exist the length of the ladder to enable him to reach required position?

586

594Show that the relation R in the set A = {1, two, 3, 4, v} given past R = {(a, b) ; a – b is even}, is an equivalence relation Also show that all the elements of {1, three, 5} are related to each other and all the elements of {2, 4} are related to each other but no element of {one, 3, five} is related to whatever element of {ii, iv}

682

758

896What is the ModeIn This Argument Q (b) Observe hateful, medium and manner of post-obit information: 30, 20, 29, 54, 35, 26, 23, 33, 28, xl

1085Q17

1095

1271Q Let f : 1, three, iv →i, 2, 5 and g : { 1,2, 5} →ane, 3 be given by f = 1,ii,3,v,iv, ane and g = one, iii,2,3,5, ane  Write g o f

1326In the following passage, fill in each of the numbered blanks with the correct form of the word given in brackets Exercise not copy the passage, only write in the correct series lodge, the give-and-take or phrase advisable to the blank space When he was 15, swimmer Michael Phelps used to dream nigh 1 (win) an Olympic aureate medal for the US But, never had he two (imagine) that one day he three (win) thirteen individual gold medals and break a two,168-year-quondam record of 12 solo titles set by Leonidas of Rhodes Leonidas 4 (compete) in four successive Olympiads (164 BC, 160 BC, 156 BC and 152 BC) 5 (run) barefoot in extremely hot and humid conditions he 6 (become) but athlete to have won 12 solo titles in any field of study But then they say, records are meant 7 (break) sooner or afterward And so on Friday morning, later on winning a gold in the 200 metre private medley, 31-year-old puddle shark Phelps 8 (break) Leonidas record Phelps clocked one infinitesimal and 54 66 seconds

1516Q no 3

1532All

1558Q What does this song convey? "Female parent, hail! Thou with sweet springs flowering, Thou fair springs bestowing, Cool with zephyrs blowing, Light-green with corn- crops growing, Mother, hail! "Thou of the shivering joyous moon-fair-skinned night, Chiliad with fair groups of flowering tree-clumps bright, Sweetly smile Speech beguiling, Mother, hail!

1572Help

166718

1680Solve

1682Q6

1763Delight solve this question of Dissolution Likewise it is given the drawings DURING the year (and not PER year) were fifteen,000 by each partner Since the firm is carried on for 2 years (2015-sixteen,2016-17) nosotros volition debit drawings only for the get-go year or both years???? ​On 1st April, 2015, X, Y and Z started business organization sharing profit and losses in the ratio of 3 : 2 : 1 respectively They contributed Rs 1,00,000, Rs lxxx,000 and Rs 40,000 respectively as their Capital which was deposited into Bank Each partner withdrew Rs 15,000 during the twelvemonth The firm was dissolved on 31st March, 2017 On this date General Reserve appeared at Rs thirty,000 and Profit and Loss A/c at Rs 12,000 (Dr ) 10 took up the stock at an agreed price of Rs 25,000 Y took upwards furniture at Rs 5,000 and Z took up debtors at Rs 18,500 Creditors of Rs 20,000 were paid off at xx% discount and then remained a balance of Rs 14,000 in the Depository financial institution Account ​Pass necessary journal entries to show the result of winding up and to close the books of the firm

1781On 1st October, 2015, Nimrat Ltd issued 20,000, x% Debentures of Rs 100 at Rs 71 each redeemable at par as follows: On 31st March, 2017 - 3,000 Debentures On 31st March, 2018 - v,000 Debentures On 31st March, 2019 - half-dozen,000 Debentures On 31st March, 2020 - 6,000 Debentures ​How much discount will be written off each year by the company?

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