Explore topic-wise InterviewSolutions in Current Affairs.

Emissivity of a surface is defined as the ratio of the quantity of thermal radiation emitted per sec per unit area of the surface to the quantity of thermal radiation emitted per sec per unit area of a perfect black body under identical conditions.

Absorptivity of a surface is defined as the ratio of the quantity of thermal radiation absorbed per sec to the quantity of radiation incident on it per second.

Heat is entirely conducted from the hot end to the cold end.

Correct option is: (C) 4 × 10^-4 per °C

It is the process by which heat is transmitted through a substance from one point to another due to the bodily motion of the heated particles of the substance. Fluids are mainly heated through convection. Natural convection arises due to unequal heating and gravity, when more heated and less dense parts rise and are replaced by the fluid. In forced convection, a material is forced to move by an agency like a pump or blower. 

The state of the rod when temperature of every cross-section of the rod becomes constant and there is no further absorption of heat in any part is called steady state. 

(i) Since |a – a| is even,

∴ (a, a) ∈ R ∴ R is reflexive.

(ii) Let (a, b) ∈ R Then |a – b| is even

∴ |b – a| is even

∴ (b, a) ∈ R ∴ R is symmetric.

(iii) Let (a, b), (b, c) ∈ R

Then a – b = ±2m, b – c = ±2n

∴ a – c = ±2(m + n), where m, n are integers.

∴ (a, c) ∈ R ∴ R is transitive

Thus, R is an equivalence relation.

a. Since a = a

∴ (a, a) ∈ R

∴ R is reflexive.

b. Let (a, b) ∈ R

Then a = b

∴ b = a

∴ (b, a) ∈ R

∴ R is symmetric.

c. Let (a, b), (b, c) ∈ R

Then, a = b, b = c

∴ a = c

∴ (a, c) ∈ R

∴ R is transitive.

Thus, R is an equivalence relation.

6x² – 5x + 1 ≤ 0

6x² – 3x – 2x + 1 ≤ 0

(3x – 1) (2x – 1) ≤ 0

either 3x – 1 ≤ 0 and 2x – 1 ≥ 0 or 3x – 1 ≥ 0 and 2x – 1 ≤ 0

Case I:

3x – 1 ≤ 0 and 2x – 1 ≥ 0

∴ x ≤ 1/3and x ≥ 1/2, which is not possible.

Case II:

3x – 1 ≥ 0 and 2x – 1 ≤ 0

∴ x ≥ 1/3 and x ≤ 1/2

∴ x ∈ [1/3, 1/2]

a. Since |a – a| is a multiple of 4,

(a, a) ∈ R

∴ R is reflexive.

b. Let (a, b) ∈ R

Then a – b = ±4m,

∴ b – a = ±4m, where m is an integer

∴ (b, a) ∈ R

∴ R is symmetric.

c. Let (a, b), (b, c) ∈ R

a – b = ± 4m, b – c = ± 4n,

∴ a – c = ±4(m + n), where m, n are integers

∴ (a, c) ∈ R

∴ R is transitive

Thus, R is an equivalence relation.

x² – x > 20

∴ x² – x – 20 > 0

∴ x² – 5x + 4x – 20 > 0

∴ (x – 5) (x + 4) > 0

∴ either x – 5 > 0 and x + 4 > 0 or x – 5 < 0 and x + 4 < 0

Case I: x – 5 > 0 and x + 4 > 0

∴ x > 5 and x > -4

∴ x > 5 ….(i)

Case II: x – 5 < 0 and x + 4 < 0

∴ x < 5 and x < -4 ∴ x < -4 …..(ii)

From (i) and (ii), we get

x ∈ (-∞, – 4) ∪ (5, ∞)

Correct Answer is: (d) sacrifice.

Correct Answer is: (b) death

He didn’t want to live as a prisoner or under restrictions. He wanted to live enjoying freedom.

Those people should show to the world that the revolutionaries not only die for their ideals but can face every calamity. They have to bear the worst type of tortures in the dark dingy prison cells.

Bhagat Singh talks about transportation for life. It is the act of sending criminals to a place that is far away as a form of Punishment.

Transportation of life is nothing but escaping from the death sentence. The convicts are sent to a far place as a form of punishment.

They wanted to escape from the noose either by hooker crook.

-9 < 2x + 7 ≤ 19

∴ -16 < 2x ≤ 12

∴ -8< x ≤ 6

∴ x ∈ (-8, 6]

A = {c, o, l, g, e}

B = {m, a, r, i, g, e}

C = {l, u, g, a, e}

B ∪ C = {m, a, r, i, g, e, l, u}

A – (B ∪ C) = {c, o}

A – B = {c, o, l} A – C = {c, o}

∴ [(A – B) ∩ (A – C)] = {c, o} = A – (B ∪ C)

∴ [A -( B ∪ C)] = [(A – B) ∩ (A – C)]

The brutal attack by the British police on Veteran freedom fighter Lala Lajpat Rai at an anti-British procession. It resulted in the death of Lajpat Rai and this incident brought a total change Bhagat Singh decided to avenge Lala Lajpat Rai’s death. The British branded the revolutionaries as terrorists this made Bhagat Singh to use bombs and guns.

Correct Answer is: (c) revolution.

Bhagat Singh kept the spark of freedom alive through his letters written from the jail cell.

The entire family of Bhagat Singh was patriotism personified. He was much attracted by the ideals of his grand father, uncle and his father. When he was young, he was in touch with leaders like Lala Lajpat Rai and Ras bihari Lai. He came in contact with revolutionaries such as Bhagwati Charan Sukhdev, and other. When Lala Lajpat Rai was killed Bhagat Singh decided to avenge his death. So he plunged in the freedom struggle.

Dear friend, 

I would like to share my views about the love of one’s nation. A man who does not have any patriotic feeling towards Motherland is not a man at all. If we save our Motherland, we can save ourselves. Our Motherland is our Mother. Under any circumstances, we showed not leave it out to anybody.

Unless we fight, we can’t survive. Our duty towards our Nation is important. We should esteem our Motherland highly. We have to curb anti-social activities. We have to put an end to terrorism and should breathe the free air of freedom. If we run after only material pleasures, we are not going to achieve anything so let us be patriotic and we should be ready to sacrifice our lives for the cause of Nation.

Your loving friend 

XYZ

Lala Lajpat Rai and Ras Bihari Bose were the political leaders.

The entire family of Bhagat Singh was patriotism personified. His grandfather was Arjun Singh who was a great orator. His father was Kishan Singh and his uncle was Ajit Singh.

Because the Bishop told the policemen that he had given them the silverware.

Because the Bishop addressed him as brother before the policemen and also told them that he had give the silverware to him.

He stole the silver ware (silver candlesticks).

He completely felt transformed and was amazed at the nobility of the Bishop. He thought that the Bishop possessed a great soul.

1. Compound sentence: A child smiles not only because it is happy but also because it wants to communicate with loving elders. 

2. Simple Sentence: A cheerful smile brings instant attention. 

3. Simple sentence: Any grown-up is instantly motivated to respond to a smiling child. 

4. Simple sentence: When a child hungry, it cries. 

5. Compound sentence: There is nothing as infetious as a warm smile, even among adults. 

6. Compound sentence: Some times even serious faces break into a smile and even the smile of a stranger carries the universal message “I care”. Do you like to smile?

His conscience pricked him.He knew that he was committing as evil deed. But later in the story he was a transformed man.

He was kind, generous and noble. He really possessed a great soul. He was compassionate towards the poor and helped them.

Jean Valjean lived with his sister along with her seven children. His was a poor family. One day his sister fell ill and the family starved. Jean Valjean searched for work every nook and corner but he could not get work. He couldn’t see the children starving. There was no help from anybody so he decided to steal. He stole some bread but he was sentenced to nineteen years in the galleys. His life was absolute hell then. They chained him like a wild animal. They treated him as beast they starved him and got work from him. He was not treated as a man. He tried to escape many times but in vain. He was caught each time and the court increased his sentence. He led the life of a prisoner for Nineteen years and he came out hardened.

He decided to work and .make up his living but he didn’t get work. All sent him out without helping him. He wandered for three days without food. They treated him as a convict. Walking aimlessly and without food, he came to the house of a Bishop. Bishop’s sister Baptistine was ready to serve the dinner.

Jean Valjean (The convict) introduced himself to the Bishop and asked for food. The Bishop was very kind. He told his sister to put another place for Jean Valjean and also to put some sheets on the bet in the alcove. The Bishop addressed him as friend and told him to feel at home. There was a little lamp, which gave poor light. So the Bishop told his sister to bring silver candlesticks and light them. She brought them and served the dinner which consisted of soup, cheese, mutton and a large loaf of bread. The convict eats quickly. After that he told the Bishop his story.

The Bishop heard his story and told him to lie down and sleep on the couch. Accordingly Jean Valjean fell asleep but he woke up at the middle of the night because of his bed because the had not slept on a bed.

Then the clock struck two Jean Valjean started thinking about the silver ware. He wanted to steal them. So he’came to the adjacent room and observed that the rays of moonlight shone on the Bishop’s face. Then he were straight to the cup board, took the silver ware and escaped.

Baptiste brought the theft to the notice of her brother (The Bishop). The Bishop didn’t lose his temper. He only told that the silverware belonged to the poor. During this time, four policemen entered the house of the Bishop and they had brought Jean Valjean with them on seeing him, the Bishop told the policemen that he had given the sliver ware to the man. The police left him and went.

Jean Valjean looked at the Bishop with wonder and he didn’t find any words to describe the nobility of the Bishop. The Bishop told him to take all the candlesticks with him and his doors are always open for him. Jean Valjean thanked him and went. He led the life of an honest man and lived happily helping the poor people like himself.

1. He opened his box and took out his new shirt.

2. AS Mohan was sick, he stayed at home.

3. Leela worked hard but she could not do well in the exam.

4. When Sachin scored a century, the specatators applauded him.

5. Let us have supper. While your bed will be made ready.

1. False

2. False

3. False

4. True

5. False

Baptistine brought them.

Jean Valjean stole the silver ware from the Bishop’s have and was caught by the police. They brought him to the Bishop. On seeing Jean Valjean. The Bishop addressed him as friend and told the policemen that he had gives him the silverware. So the police left him. The Bishop was noble and generous.

Jean Valjean was a poor man, lived with his sister who had seven children. His family was poor. One day his sister fell ill and the children starved. Jean asked for work but in vain. So he stole some bread for this he was sentenced to 19 years in the galleys. He was treated like a beast and a hound. He was chained like a wild animal and fed on filth. The people hated him, but the Bishop helped him and brought transformation in his personality.

Because he was helped by the Bishop though he was not accepted by others. When he went to the Bishop’s room, he saw the rays of moonlight shone on the Bishop’s face and he slept peacefully. So Jean Valjean hesitated.

He stole some bread and was punished. He was sentenced to 19 years in the galleys. He was chained up like a wild animal and he was lashed like a hound. He was illtreated. So he was abeast.

That he would use the silver wave to become as honest man.

If the child is not aware of the heroes, leaders and friends, he might think that the world has only scoundrels, selfish politicians and enemies and become dejected.

Be sportive and accept defeat with a smile.

(c) in spite of all the wickedness in this world, there is enough goodness.

(b) the harsh reality of life

He was a convict.

The author lays emphasis on an adding words to our actions and also an adding a action to words because we can do better in that way.

A better word and action would make any situation better.