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95751.

Rewrite the following sentences, using too or enough:(i) It’s very cold; we can not go out.(ii) This book is very difficult; I can’t read it.(iii) It’s very dark; I can’t see anything.(iv) It’s very far; we can’t go on foot.(v) The music is very soft; we can’t hear it.(vi) You are quite clever; you know it well. (vii) You are quite old now; you ought to understand better.(viii) The fruit is ripe; we can pick it.(ix) That man is stupid; he believes her.(x) It’s very small; this is a big room.

Answer»

(i) It’s too cold for us to go out.

(ii) This book is too difficult for me to read.

(iii) It’s too dark for me to see anything.

(iv) It’s too for to go on foot.

(v) The music is too soft to hearit.

(vi) You are clever enough to know it well. 

(vii) You are old enough now to understand better.

(viii) The fruit is ripe enough (for us) to pick.

(ix) That man is stupid enough to believe her.

(x) It’s too small for this big room

95752.

This book is very difficult. I don’t understand it. A) I can’t make it up. B) I can’t make it out. C) I can’t make it off D) I can’t make it over.

Answer»

Correct option is B) I can’t make it out

95753.

This is very important so make sure you give it to him right away. A) red nose B) red hot C) run over

Answer»

Correct option is B) red hot

95754.

The Government will have ________ this proposal very carefully. A) to go for B) to go after C) to go into D) to go round E) to go under

Answer»

Correct option is C) to go into

95755.

It’s difficult to see through this windscreen - I can’t even make ______ where the road is.A) up B) out C) into D) over

Answer»

Correct option is B) out

95756.

It’s very hot in this room; that fire ________ a good heat. A) gives away B) gives in C) gives outD) gives up E) gives round

Answer»

Correct option is C) gives out

95757.

Don’t eat that cheese - it’s ______! A) gone away B) gone out C) gone off D) gone down

Answer»

Correct option is C) gone off

95758.

The soldier took careful aim, then ________ several shots. A) exploded B) broke C) fired D) banged E) bombed

Answer»

Correct option is C) fired

95759.

A bomb ______ (exploded) in the town center, killing three people and injuring twenty-five others. A) went on B) went off C) set on D) set off

Answer»

Correct option is B) went off

95760.

The voltage of clouds is `4 xx 10^(6) V` with respect to ground. In a lighting strike lasting `100 ms`, a charge of `4 C` is delivered to the ground. The power of ligthing strike isA. `160 MW`B. `80 MW`C. `20MW`D. `500 kW`

Answer» Correct Answer - a
Work done in delivering `g` coulomb of charge from clouds to ground.
`W=Vq`
`=4xx10^(6)xx4`
`=16xx10^(6)J`
The power of lighting strike,
`P=(W)/(t)=(16xx10^(6))/(0.1)= 160xx10^(6)W= 160MW`
95761.

Why did they TURN him OUT? A) dismiss B) employ C) refuse D) free E) examine

Answer»

Correct option is B) employ

95762.

Read the following lines and answer the questions set on it.I passed along the water’s edge below the humid trees. My spirit rocked in evening light, the rushes round my knees, My spirit rocked in sleep and sighes; and saw the moor fowl pace All dripping on a grassy slope, and saw them cease to chase Each other round in circles, and heard the eldest speak;(i) Where did the speaker pass?(ii) What was rocked in the evening light?(iii) Who was heard speaking ?

Answer»

(i) He passed along the wator’s edge below the humid trees.

(ii) The speaker’s spirit.

(iii) The eldest was heard speaking

95763.

According to Payment of wages act total amount of deduction from wages shall not exceed1. 30%2. 40%3. 50%4. 60%

Answer» Correct Answer - Option 3 : 50%

The correct answer is 50%

   According to the Payment of Wages Act

  • The total amount of deductions from wages shall not exceed
    • 75%, if the deduction includes the payment to the cooperative societies.
    • 50%, in any other case.

 Important features of the Payment of Wages act:

  • This act applies to all the employed people of India whose wage does not exceed 24000 rupees per month.
  • The act includes services like transport, docks, mines, plantations, etc.
  • A wage period shall not exceed one month.
  • Wage shall be paid before the 7th day of the month if the person is employed in an establishment with less than one thousand workers. And 10th day of the month if the person is employed in an establishment with more than one thousand workers.
  • The total amount of deductions from wages shall not exceed
  1. 75%, if the deduction includes the payment to the cooperative societies.
  2. 50%, in any other case.
  • The total amount of fine imposed on any employed person shall not exceed an amount equal to 3% of wages.
  • No fine shall be imposed on a person who is under the age of fifteen years.
  • An appropriate government shall appoint an authority to hear and decide the claims related to deduction and delays in wages. Here appropriate authority means
  1. Commissioner for Workmen’s Compensation or
  2. Regional Labour Commissioner or
  3. Assistant Labour Commissioner
  4. The presiding officer of any Labour Court or Industrial Tribunal formed under Industrial Dispute Act, 1947.
  5. Judge of a Civil Court or a Judicial Magistrate.
  • They may direct the employer to refund the deducted amount, pay the delayed wage, or compensate the employee.
  • In the case of any malicious application, the authority is vested with the power to take appropriate action.
  • The authority can take action against any person who willfully neglects to pay the wages by the date fixed by the authority.
95764.

Completc the following by filling the blanks using the right form of the verb given in brackets.The guard ....... (dismiss) and they ....... (wait) to see what ......... (will happen).

Answer»

The guard was dismissed and they waited to see what would happen.

95765.

Report the following conversation.Don Gonzalo : Are you speaking to me Senora?Don Laura : Yes, to you.Don Gonzalo : What do you wish?Don Laura : You have scared away the birds who were feeding on my crumbs.

Answer»

Don Gonzalo asked Laura whether she was speaking to him. She replied in the positive. Gonzalo further asked what she wished. She said that he had scaled away the birds who were feeding on the crumbs.

95766.

I’ve bought some attractive ________ and I’m going to make a dress out of it. A) clothing B) costumeC) material D) matter E) pattern

Answer»

Correct option is C) material

95767.

...... is the term used to describe the level of stress that is good for a person as it enhances performance. a. Distress b. Eustress c. Social Stress d. Strain 

Answer»

Answer is b. Eustress

95768.

Assertion: When electron and holes combine then this reaction is exothermic.Reason: Hole electron can not combine.(1) If both assertion and reason are true and reason is the correct explanation of assertion.(2) If both assertion and reason are true but reason is not the correct explanation of assertion.(3) If assertion is true but reason is false.(4) If both assertion and reason are false.

Answer»

(3) If assertion is true but reason is false.

95769.

Explain the problems of adolescence in detail.

Answer»

There are many problems related to adolescence, which include:

  1. Family.
  2. Education.
  3. Mood swings.
  4. Moral values.
  5. Body features.
  6. Social adjustment.
  7. Personal health issues.
  8. Gender discrimination.
95770.

Assertion: Electron moving perpendicular to vector B will perform circular motionReason: Force by magnetic field is perpendicular to velocity(1) If both assertion and reason are true and reason is the correct explanation of assertion.(2) If both assertion and reason are true but reason is not the correct explanation of assertion.(3) If assertion is true but reason is false.(4) If both assertion and reason are false.

Answer»

Correct option (2) If both assertion and reason are true but reason is not the correct explanation of assertion.

Explanation:

If Vector (F ⊥ V) at all instants then motion will be circular.

95771.

Assertion : Even though net external force on a body is zero, momentum need not be conserved. Reason : The internal interaction between particles of a body cancels out momentum of each other. (1) If both assertion and reason are true and reason is the correct explanation of assertion. (2) If both assertion and reason are true but reason is not the correct explanation of assertion. (3) If assertion is true but reason is false. (4) If both assertion and reason are false.

Answer»

(4) If both assertion and reason are false.

95772.

Assertion : There is no loss in energy in elastic collision Reason : Linear momentum is conserved in elastic collision (1) If both assertion and reason are true and reason is the correct explanation of assertion. (2) If both assertion and reason are true but reason is not the correct explanation of assertion. (3) If assertion is true but reason is false. (4) If both assertion and reason are false.

Answer»

(2) If both assertion and reason are true but reason is not the correct explanation of assertion. 

95773.

Which of the following combination of aspects to be assessed and tool and technique required to assess them is/are correct?I. Mathematical reasoning – Observation of orderly approach to normal tasksII. Disposition towards mathematics – Observing the participation of the child in different mathematical activities like mathematics exhibition, puzzles and games1. Both I and II2. Only I3. Only II4. Neither I nor II

Answer» Correct Answer - Option 1 : Both I and II

In elementary school years, the learning outcomes are focused on developing useful capabilities and also on developing the ability to think and reason mathematically. Useful capabilities include conceptual understanding and ability to understand and solve problems in the areas of numbers, number operations, fractions, shapes and spatial thinking, measurement, problem-solving, patterns and data handling (NCERT, 2008). Including the above capabilities, the process of assessment in mathematics includes five major dimensions of mathematical learning for which the probable tools and techniques to be used are suggested in the following table:

Aspects to be assessedTools and techniques
Concepts and procedures
  • Written, oral and performance tests and tasks.
  • Observation of interactions in the classroom and elsewhere
Mathematical reasoning
  • Tests and/or tasks (written or oral)
  • Oral description of the process of solving any problem
  • Observation of interactions in the groups
  • Observation of orderly approach to normal tasks
Disposition towards mathematics
  • Observing the participation of the child in different mathematical activities like mathematics exhibition, puzzles, games
  • Observation of learner’s interest in collecting and preparing TLMs, reading articles relating to mathematics, Portfolios
  • Child’s participation in performing mathematical tasks
Using mathematical knowledge to solve problems
  • Written and oral tests
  • Projects and assignments
  • Observing learner in co-curricular activities
Mathematical Communication
  • Content analysis of communications (written articles, diagrams, pictures, and recorded interactions, portfolios)
  • Observation, interviews and interaction in the classroom and elsewhere

 

Hence, we conclude that both combinations are correct.

95774.

Assertion : In both radio activity and photoelectric effect electrons may be ejected. Reason : In photoelectric effect and radio activity emission occurs only of unstable elements. (1) If both assertion and reason are true and reason is the correct explanation of assertion. (2) If both assertion and reason are true but reason is not the correct explanation of assertion. (3) If assertion is true but reason is false. (4) If both assertion and reason are false.

Answer»

(3) If assertion is true but reason is false.

95775.

Which is incorrect for paper chromatography (1) It is a part of partition chromatography (2) It is a stationary phase (3) Rf value decrease when rate of adsorption increase (4) None of these 

Answer»

(2) It is a stationary phase

95776.

Gurmeet was given a personality test to assess how he expresses aggression in the face of a frustrating situation. Identify the test most suitable for this. a. Rosenzweig Picture Frustration test b. Eysenck Personality questionnaire c. Thematic Apperception Test d. 16 Personality Factors Test

Answer»

a. Rosenzweig Picture Frustration test

95777.

Answer the following questions according to the text.When Christopher Columbus set sail in 1492 from Spain, his destination was not America. In fact, he did not even know that the huge American continents existed. His purpose in sailing west was to reach the Indies faster than other ships which used a route around Africa. The Indies were a source of riches for Europeans during those days. The treasures of spices, silks, etc. were greatly valued by Europeans but were extremely difficult to obtain. When Columbus reached the islands that are now known as the West Indies, he believed he had reached Asia and he called the people living there ‘Indians’. 1. In 1492 Columbus _____. A) wished to go to America. B) started traveling towards Asia. C) traveled by way of Africa to Asia. D) wanted to become rich by sailing to America. E) was looking for the treasures of America. 2. Spices, silks and other treasures _____. A) were found around the world. B) were taken to Asia to be sold. C) were from the West Indies. D) from Asia, were brought to Europe. E) from Spain, were taken to the Indies. 3. Columbus believed _____. A) the destination for Europeans was Asia via America. B) Europeans should become rich. C) the riches of the West Indies were better than those of Asia. D) Spain could be reached via the Asian route. E) he was headed for India.

Answer»

1  B) started traveling towards Asia

2  D) from Asia, were brought to Europe.

3  E) he was headed for India.

95778.

After Columbus’s first voyage in 1492, the news of his DISCOVERY spread across Europe. A) death B) treason C) explorationD) recovery E) victory

Answer»

Correct option is C) exploration

95779.

Which one of the following dams is located in Odisha?(a) Tehri(b) Sardar Sarovar(c) Hirakud(d) Nagarjuna Sagar

Answer»

Answer is : (c) Hirakud

95780.

Tsangpo river of Tibet is known in India as:1. Ganga2. Yamuna3. Brahmaputra4. Indus

Answer» Correct Answer - Option 3 : Brahmaputra

The correct answer is the Brahmaputra.

Explanation:

  • The Yarlung Tsangpo River is the highest major river in the world. It is the longest river of Tibet Autonomous Region, China.
  • Downstream from Arunachal Pradesh, the river becomes wider and after reaching Assam, the river is known as the Brahmaputra.
  • The river has been called the "Everest of Rivers" because of the extreme conditions of the river.

  • Ganga river originates from the Gangotri Glacier of the western Himalayas in the Indian state of Uttarakhand.
  • Indus river originates in the Tibetan Plateau in the close proximity of Lake Manasarovar, the river runs a course through the Ladakh region of India.
  • Mahanadi river flows through the states of Chhattisgarh and Odisha. Mahanadi is also known for the Hirakud Dam.
95781.

Over exploitation of ground water in Bihar has led to increase in concentration of ?(a) Floride (b) Cloride(c) Arsenic (d) Iron

Answer»

Over exploitation of ground water in Bihar has led to increase in concentration of Arsenic. 

95782.

Dogs and Reindeer are used as pack animals:(a) Savanna Region (b) Desert Region(c) Mountainous Region (d) Tundra Region

Answer»

Dogs and Reindeer are Tundra Region used as pack animals.

95783.

Trans Siberian Railway is located in ………..(a) Europe (b) Asia(c) Africa (d) Australia

Answer»

Trans Siberian Railway is located in Asia.

95784.

Who among the following is the fastest Asian to cycle the globe ?1. Vedangi Kulkarni2. Xu Yukun3. Miho Yoshikawa4. Rameshwori Devi

Answer» Correct Answer - Option 1 : Vedangi Kulkarni

The correct answer is Vedangi Kulkarni

  •  Vedangi Kulkarni
    • Vedangi Kulkarni is an Indian endurance cyclist.
    • In 2018 at the age of 20, she became the youngest woman to cycle the globe.
    • She studies sports management at Bournemouth University, United Kingdom.
    • She cycling a total of 29,000 km in 159 days, pedaling over 300km a day spanning 14 countries.

  • Xu Yukun
    •  He is a Chinese cyclist.
    • He began cycling at the age of 61.
    • His cycling career spanning 25 countries across four continents.
  • Miho Yoshikawa
    • Miho Yoshikawa is a Japanese professional racing cyclist.
    • Her last rode for UCI Women's Team Bizkaia-Durango.
    • She rode in the women's road race and finishing in 21st place.
  • Rameshwar Devi
    • She was an avid sportsperson right from her childhood and played various sports like cricket, basketball, and triathlon before finding her passion for cycling.
    • Her career was started in 1995 and spanned over two decades.
    • Now she has clinched around 102 medals in various national and international level competitions.
95785.

Bahadur Singh who won the gold medals in the 1978 and 1982 Asian games is an Indian1. Wrestler2. Boxer3. Runner4. Shot-putter

Answer» Correct Answer - Option 4 : Shot-putter

The correct answer is Shot-putter.

  • Bahadur Singh is an Indian Shot-putter.
    • He won back-to-back Asian Games gold medals in Bangkok in 1978 and in New Delhi in 1982.
    • He also won a silver medal in Tehran in 1974.
    • He also won a medal in each of the four Asian Track and Field Meets held in Marikina 1973 (bronze), Seoul in 1975 (gold), Tokyo in 1979 (bronze) and Tokyo in 1981 (silver).
    • He was conferred with the Arjuna Award in 1976.
    • He was presented with the Dronacharya Award in 1998.
    • He was conferred the prestigious Padma Shri in 1983.
95786.

Who is the fastest Asian to traverse the globe riding a bicycle?1. Vedangi Kulkarni2. Rameshwori Devi3. Mayuri Lute4. E Chaoba Devi

Answer» Correct Answer - Option 1 : Vedangi Kulkarni

The Correct Answer is Vedangi Kulkarni.

 

  • In December 2018, Vedangi Kulkarni has become the fastest Asian to cycle the globe.
  • She completed the 29,000 kilometers' distance required to qualify as bicycling across the globe.
  • She spent 159 days peddling up to 300 kilometers a day in 14 countries.
95787.

Match List-I with List-II and select the correct answer using the codes given below:List – I(Rivers)List – II(Dams)A. Satluji. BilaspurB. Banasii. MejaC. Kothariiii. Bhakra-NangalD. Sukdiiv. Bankali1. (A) - (iii), (B) - (i), (C) - (ii), (D) - (iv)2. (A) - (i), (B) - (ii), (C) - (iii), (D) - (iv)3. (A) - (iv), (B) - (iii), (C) - (ii), (D) - (i)4. (A) - (ii), (B) - (iii), (C) - (iv), (D) - (i)

Answer» Correct Answer - Option 1 : (A) - (iii), (B) - (i), (C) - (ii), (D) - (iv)

The correct answer is option 4.

Rivers

Dams

Satluj

Bhakra-Nangal

Banas

Bisalpur

Kothari

Meja

Sukdi

Bankali

Major rivers of Rajasthan with their dams/irrigation project name:

Rivers

Dams
SukdiBankali Dam
BerachBhopal Sagar Dam
BanasBisalpur Dam
BerachFateh Sagar Dam
GambhiriGambhiri Dam
JakhamJakham Main Dam
ChambalJawahar Sagar Dam
JawaiJawai Dam
LuniJaswant Sagar Dam
Kalisil Kalisil Dam
MahiMahi Bajaj Sagar Dam
KothariMeja Dam
GambhiriPanchana Dam
GomatiRajsamand Dam
ChambalRana Pratap Sagar Dam
KhariUmed/ Umaid Sagar (Baran) Dam
95788.

A disc is rotating with angular speed ω. If a child sits on it, what is conserved? (a) Linear momentum (b) Angular momentum (c) Kinetic energy (d) Potential energy

Answer»

(b) Angular momentum

95789.

A wooden log of mass M&length L is hinged by a frictionless of nail at O. A bullet of mass m strikes with velocity v & sticks to it. Find the angular velocity of the system immediately after collision - A. `(mv)/(M+m)`B. `(3mv)/((M+m)L)`C. `(3mv)/((M+3m)L)`D. `(mv)/((M+3m)L)`

Answer» Correct Answer - C
`"mvL"=((ML^(2))/3+mL^(2))omega`
`omega=(3mv)/((M+3m)L)`
95790.

The electrical intensity inside a charged hollow sphere is :(a) E0σ(b) σ/E0(c) Zero(d) E0/2

Answer»

Correct answer is (c) Zero

95791.

A long wire having linear charge density `lambda` moving with constant velocity v along its length. A point charge moving with same speed in opposite direction and at that instant it is at a distance r from the wire. The net force acting on the charge is given by A. `(lambdaq)/(2pir)[(1)/(epsilon_(0))+v^(2)mu_(0)]`B. `(lambdaq)/(2pir)[(1)/(epsilon_(0))-mu_(0)v^(2)]`C. `(lambdaq)/(2pir)sqrt(((1)/(epsilon_(0)))^(2)+v^(4)mu_(0)^(2))`D. zero

Answer» Gauss Law for `vec(E)` inside sphere
`epsilon[E(4pir^(2))]=underset(0)overset(r )(int) (kr) (4pir^(2))dr`
`E=(kr^(2))/(2epsilon_(0))`
Electrostatic energy within `=underset(0)overset(R )(int)(1)/(2)epsilon_(0)E^(2)4pir^(2)dr=(2piepsilon_(0))underset(0)overset(R )(int)(k^(2)r^(6))/(16epsilon_(0)^(2))prop(R^(7))`
Total charge within `=underset(0)overset(R )(int)4pikr^(3)dr=pikR^(4)`
Electric field at `r gt R = (1)/(4piepsilon_(0))((pikR^(4))/(r^(2)))`
Electric energy for `oo gt r ge R = underset(R )overset(oo)(int)(((1)/(4piepsilon_(0))(pikR^(4))/(r^(2)))^(2)4pir^(2)dr)/(2epsilon_(0))=("const")R^(8)underset(R )overset(oo)(int)(1)/(r^(2))dr=("const")R^(8)[(1)/(R )]="const"(R^(7))`
Electrostatic energy inside and outside sphere is `propR^(7)`. So total `prop(R^(7))`
95792.

Three equal resistace, each of `R` ohm, are connectedd as shown in the figure. A battery of `2V` and of internal resistance `0.1` ohm is connected across the circuit. The value of `R` for which the heat generated in the circuit maximum will be A. `0.3 Omega`B. `0.03 Omega`C. `0.01 Omega`D. `0.1 Omega`

Answer» Heat gained in vaporization = Heat released in fusion
`m_(1)L_(v)=(m-m_(1))L_(f)`
`(m_(1))/(m-m_(1))=(L_(f))/(L_(v))=(1)/(7)`
`7m_(1)=m-m_(1)`
`8m_(1)=m`
`(m_(1))/(m)=(1)/(8)=(x)/(y)`
95793.

Two plane circular coilds P and Q have radii `r_(1)` and `r_(2)`, respectively, `(r_(1) lt lt r_(2))` and are coaxial as shown in fig. The number of turns in P and Q are respectively `N_(1)` and `N_(2)`. If current in coil Q is varied steadily at a rate x ampere/second then the induced emf in the coil P will be approximatery - A. `mu_(0)N_(1)N_(2)pir_(1)^(2)`B. `mu_(0)N_(1)N_(2)pi r_(1)^(2)x`C. `mu_(0)N_(1)N_(2)pi r_(1)^(2) x//2r_(2)`D. zero

Answer» Correct Answer - C
`phi = Mi`
`e = (Mdi)/(dt) = Mx = (mu_(0)N_(1)N_(2)pir_(1)^(2)x)/(2r_(2))`
95794.

In the given circuit assuming inductor and source to be ideal, the phase differece between current `I_(1)` and `I_(2)` : A. `tan^(-1)((X_(C))/(R))-(pi)/(2)`B. `tan^(-1)((X_(C))/(R))`C. `tan^(-1)((X_(C))/(R))+(pi)/(2)`D. `(pi)/(2)`

Answer» Correct Answer - C
Let `V_(s) = V_(s) sin omegat`
`I_(1) = I_(01) sin (omegat - pi//2)`
`I_(2) = I_(02) sin (omegat + theta)`
`tan theta = ((x_(c ))/(R ))` : So phase diffreence `= theta + (pi)/(2)`
`tan^(-1) ((X_(c ))/(R )) + (pi)/(2)`
95795.

The current-voltage graph of a device is shown in figure. The resistance is negative in region. A. `AB`B. `BC`C. `ABC`D. None of these

Answer» Correct Answer - a
`R=(DeltaV)/(Deltai)` is negative, when current decreases with increase of potential difference. This is exhibited by part `AB`.
95796.

A charged spherical conductor of radius `a` and charge `q` is, surrounded by another charged concentric sphere of radius `b(bgta)`. The potential differece between conductors is `V`. When, the spherical conductor of radius `b` is discharged completely, then the potential difference between conductor will beA. `V`B. `(V_(a))/(b)`C. `(q_(1))/(4pi epsilon_(0)a)-(q_(2))/(4pi epsilon_(0)b)`D. None of the above

Answer» Correct Answer - a
Since, potential difference between spheres depends upon electric field present in the space between spheres, the electric field in the space between spheres due to outer sphere is zero.
So, potential difference between spheres does not depend upon the charge on outer sphere.
95797.

If By mistake Battey is connected between `B` and `C` Galvanometer is connected across `A` and `C` then .A. We cannot get balanced pointB. Experiment will be less accurateC. Experiment can e done in similar mannerD. Experiment can be done in similar manner but now `K_(2)` should be pressed first then `K_(1)` .

Answer» Correct Answer - D
95798.

In the given potentiometer circuit length of the wire `AB` is `3 m` and resistance is `R = 4.5 Omega`. The length `AC` for no deflection in galvanometer is A. 2 mB. 1.8 mC. dependent on `r_1`D. none of these

Answer» Correct Answer - D
d. `E_1` could be balanced if positive terminal of `E_1` would be connected to A.
95799.

The correct order of density of s-Block elements (a) Li< Na < Rb < K < Cs(b) Cs < Rb < K < Na < Li(c) Cs Rb Na < K < Li(d) Li < K < Na < Rb < Cs

Answer»

(d) Li < K < Na < Rb < Cs

On moving down in a group, density increase but the density of K is somewhat lesser than Na.

Thus, the order of density is Li < K < Na < Rb < Cs

95800.

A battery of emf `E_(0) = 12 V` is connected across a `4 m` long uniform wire having resistance `(4 Omega)/(m)`. The cells of small emfs `epsilon_(1) = 2 V` and `epsilon_(2) - 4 V` having internal resistance `2 Omega` and `6 Omega` respectively, are connected as shown in the figure. If galvanometer shows no deflection at the point `N`, the distance of point `N` from teh point `A` is equal to A. `1//6m`B. `1//3 m `C. ` 25 cm `D. ` 50 cm `

Answer» Correct Answer - C
c. `R_(AB) = 16 Omega, V_(AB) = (R_(AB)epsilon_0)/(R+R_(AB)) = (16 xx 12)/(8+16) = 8V`.
Current in the loop of `epsilon_1 and epsilon_2` :
`I = (epsilon_2 + epsilon_1)/(r_1+r_2) = (4+2)/(2+6) = 3/4 A`
`epsilon_1 - Ir_1 = V_(AB) = (AN)/(AB) (V_(AB)) or 2-3/4 xx 2 = (AN)/4 xx 8 `
or `AN = 1/4 m = 25 cm`.