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प्रश्न
How does an electric fan managed to throw so much air when it is switched on?
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उत्तर
An electrical fan comprises of three blades and a whirling motor. The moment it is switched on. the motor starts and begins to rotate, forcing the blades to move in circular movement. this generates a lot of pressure, which forces the air downwards in all directions.
APPEARS IN
संबंधित प्रश्न
Have you ever had to make a difficult choice (or do you think you will have difficult choices to make)? How will you make the choice (for what reasons)?
The poem is about a brook. A dictionary would define a brook, as a stream or a
small river. Read the poem silently first. After the first reading, the teacher will
make you listen to a recording of the poem. What do you think the poem is all
about?
I come from haunts of coot and hern;
I make a sudden sally
And sparkle out among the fern,
To bicker down a valley.
By thirty hills I hurry down,
Or slip between the ridges,
By twenty thorpes, a little town,
And half a hundred bridges.
Till last by Philip's farm I flow
10 To join the brimming river,
For men may come and men may go,
But I go on for ever.
I chatter over stony ways,
In little sharps and trebles,
15 I bubble into eddying bays,
I babble on the pebbles.
With many a curve my banks I fret
By many a field and fallow,
And many a fairy foreland set
20 With willow-weed and mallow.
I chatter, chatter, as I flow
To join the brimming river,
For men may come and men may go,
But I go on for ever.
25 I wind about, and in and out,
With here a blossom sailing,
And here and there a lusty trout,
And here and there a grayling,
And here and there a foamy flake
30 Upon me, as I travel
With many a silvery waterbreak
Above the golden gravel,
And draw them all along, and flow
To join the brimming river
35 For men may come and men may go,
But I go on for ever.
I steal by lawns and grassy plots,
I slide by hazel covers
I move the sweet forget-me-nots
40 That grow for happy lovers.
I slip, I slide, I gloom, I glance,
Among my skimming swallows;
I make the netted sunbeam dance
Against my sandy shallows.
45 I murmur under moon and stars
In brambly wildernesses;
I linger by my shingly bars;
I loiter round my cresses;
And out again I curve and flow
50 To join the brimming river,
For men may come and men may go,
But I go on for ever.
About the Poet
Lord Tennyson (1809-92) was born in Lincolnshire. Poet Laureate for over 40 years, Tennyson is representative of the Victorian age. His skilled craftsmanship and noble ideals retained a large audience for poetry in an age when the novel was engrossing more and more readers. Tennyson's real contribution lies in his shorter poems like The Lady of Shallot, The Princess, Ulysses, The Palace of Art etc. His fame rests on his perfect control of sound, the synthesis of sound and meaning, and the union of visual and musical.
Sometimes we see something beautiful and striking, and we remember it for a
long time afterwards. Can you recollect this ever happening to you? If so, what
was it? What do you remember about it now? Are the details of what you saw or
the feelings you experienced at that time fresh in your mind? Think for a few
minutes, then share your thoughts with the class.
Read this article about the great Indian Rhinoceros. [You will find the information useful for your group discussion in 5.]
The Indian Rhinoceros or the Great One-Horned Rhinoceros or the Asian Onehorned Rhinoceros (Rhinoceros unicomis) is a large mammal primarily found in north-eastern India, Nepal and parts of Bhutan. It is confined to the tall grasslands and forests in the foothills of the Himalayas.
The Indian Rhinoceros once ranged throughout the entire stretch of the Indo Gangetic Plain but excessive hunting reduced their natural habitat drastically.
Today, about 3,000 Indian Rhinos live in the wild, 1,800 of which are found in Assam alone. In 2008, more than 400 Indian Rhinos were sighted in Nepal's Chitwan National Park.
In size it is equal to that of the White Rhino in Africa; together they are the largest of all rhino species. The Great One-Horned Rhinoceros has a single horn; this is present in both males and females, but not on newborn young. In most adults, the horn reachee a length of about 25 centimetres, but has been recorded up to 57 .2 centimetres in length. The nasal hom curves backwards from the nose. The horn is naturally black.
This prehistoric-looking rhinoceros bas thick, silver-brown skin which becomes pinkish near the large skin folds that cover its body. The male develops thick neckfolds. It has very little body hair aside from eyelashes, ear-fringes and tail-brush.
These rhinos live in tall grasslands and riverine forests, but due to the loss of habitat, they have been forced towards cultivated land. They are mostly solitary creatures, with the exception of mothers and calves and breeding pairs, although they sometimes, congregate at bathing areas.
The Indian Rhinoceros makes a wide variety of vocalizations. At least ten distinct vocalizations have been identified: snorting, honking, bleating, roaring, squeak panting, moo-grunting, shrieking, groaning, rumbling and humphing. In addition to noises, the rhino also uses olfactory communication.
In aggregation, Indian Rhinos are often friendly. They will often greet each other by waving or bobbing their heads, mounting flanks, nuzzling noses, or licking. Rhinos will playfully spar, run around, and play with twigs in their mouth. Adult males are the primary instigators of fights. Fights between dominant males are the most common cause of rhino mortality. Indian rhinos have few natural enemies, except for tigers. Tigers sometimes kill unguarded calves, but adult rhinos are less vulnerable due to their size. Humans are the only other animal threat, hunting the rhinoceros primarily for sport or for the use of its horn. Indian Rhinos have been somewhat tamed and trained in circuses, but they remain dangerous and unpredictable animals.
In the nineteenth and early twentieth century, the Indian Rhinoceros was hunted relentlessly. Reports from the middle of the nineteenth century claim that some military officers in Assam individually shot more than 200 rhinos. In the early 1900s, officials became concerned at the rhinos' plummeting numbers. By 1908 in Kaziranga, one of the Rhinos' main ranges, the population had fallen to around 12 individuals. In 1910, all rhino hunting in India became prohibited.
The rhino has been a major success in conservation. Only 100 remained in the early 1900s; a century later, their population has increased to about 2500 again, but even so, the species is still endangered. The Indian rhino is illegally poached for its horn. Some cultures in East Asia believe that the hair has healing and potency powers and therefore is used for traditional Chinese medicine and other Oriental medicines.
The Indian and Nepalese Governments have taken major steps towards Indian Rhinoceros conservation with the help of the World Wildlife Fund (WWF). The Kaziranga National Park and Manas National Park in Assam, Pobitora Reserve Forest in Assam {having the highest Indian rhino density in the world), Orang National Park of Assam, Laokhowa Reserve Forest of Assam (having a very small population) and Royal Chitwan National Park in Nepal are homes to this endangered animal.
Dr. Wood, the capable general practitioner, has been requested to solve this case. He gathers information about the murder from the inmates or the house. The information is presented in two parts.
Parts A: Background story by Arthur Conan Doyle
Parts B: Conversation between Dr. Wood and Cecil Barker
Part A
Background Story
The village of Birlstone is a small and very ancient cluster of half-timbered cottages on the northern border of the county of Sussex. For centuries it had remained unchanged but its picturesque appearance has attracted well-to-do residents. A number of small shops have come into being to meet the wants of the increased population.
About half a mile from the town, standing in an old park famous for its huge beech trees, was the ancient Manor House, with its many gables and its small diamond paned windows. The only approach to the house was over a drawbridge, the chains and windlass of which had been rusted and broken. The family consisted of only two individuals - John Douglas and his wife. Douglas was cheery and genial to all and had acquired great popularity among the villagers. He appeared to have plenty of money. Thus, it came about that John Douglas had, within five years, won himself quite a reputation in Birlstone. His wife was a beautiful woman, tall, dark and slender, younger than her husband; a disparity which seemed in no way to mar the contentment of their family life. It was remarked sometimes, that the confidence between the two did not appear to be complete. There were signs sometimes of some nerve strain upon the part of Mrs. Douglas.
Cecil Barker, was a frequent and welcome visitor at Manor House, Barker was an easy going, free handed gentleman.
It was on Jan 6th at 11:45 that the alarm reached the small local police station that John Douglas had been murdered. Dr. Wood seemed to be unnerved and troubled.
Part B
Conversation between Dr. Wood and Cecil Barker
Dr. Wood : We will touch nothing until my superiors arrive. {He spoke in a hushed voice, stating at the dreadful head)
C.Barker : Nothing has been touched untilnow.
Dr. Wood : When did this happen?
C.Barker : It was just half-past eleven. I was sitting by the fire in my bedroom when I heard the gun shot. In thirty seconds I was in the room.
Dr. Wood : Wasthedooropen?
C.Barker : Yes, it was open. Poor Douglas was lying as you see him.
Dr. Wood : Did you see anyone?
C. Barker : No, I heard Mrs. Douglas coming down the stains behind me, and I rushed out 1 to prevent her from seeing this dreadful sight.
Dr. Wood : But I have heard that the drawbridge is kept up all night.
C. Barker : Yee,it was up until l lowered it.
Dr. Wood : Then how could any murderer have got away? It ls out of question! Mr Douglas must have shot himself.
C. Barker : That was our first idea. But see! The diamond paned window is open to its full extent.
Dr. Wood : I think someone stood there while trying to get out.
C. Barker : You mean that someone waded across the moat?
Dr. Wood : Exactly!
C. Barker : I agree with you.
Dr. Wood : But what I ask you ls, how did he even get into the house at all if the bridge was up?
C. Barker : Ah, that's the question.
Dr. Wood : At what time was the bridge raised?
C. Barker : It was nearly 6 O'clock.
Dr. Wood : Then it comes to this, if anyone came from outside -if they did-they must have got in across the bridge before six and had been in hiding ever since. The man was waiting. He shot him, when he got the chance.
Bangle sellers are we who bear
Our shining loads to the temple fair...
Who will buy these delicate, bright
Rainbow-tinted circles of light?
Lustrous tokens of radiant lives,
For happy daughters and happy wives.
Read the lines given above and answer the question that follow.
Who is the speaker in the poem?
"My father lived at Blenheim then,
Yon little stream hard by;
They burnt his dwelling to the ground,
And he was forced to fly;
So with his wife and child he fled,
Nor had he where to rest his head.
"With fire and sword the country round
Was wasted far and wide,
And many a childing mother then,
And new-born baby died;
But things like that, you know, must be
At every famous victory;
Read the lines given above and answer the question that follow.
What happened to Kaspar’s family in the war?
"They say it was a shocking sight
After the field was won;
For many thousand bodies here
Lay rotting in the sun;
But things like that, you know, must be
After a famous victory.
"Great praise the Duke of Marlbro'won,
And our good Prince Eugene."
"Why,'twas a very wicked thing!"
Said little Wilhelmine.
"Nay...nay...my little girl,"quoth he,
"It was a famous victory.
"And everybody praised the Duke
Who this great fight did win."
"But what good came of it at last?"
Quoth little Peterkin.
"Why that I cannot tell,"said he,
"But 'twas a famous victory."
Read the lines given above and answer the question that follow.
How do the skulls symbolize the theme in “The Battle of Blenheim”?
As it turned out, Luz broke his own past record. In doing so, he pushed me on to a peak performance. I remember that at the instant I landed from my final jump—the one which set the Olympic record of 26 feet 5-5/16 inches—he was at my side, congratulating me. Despite the fact that Hitler glared at us from the stands not a hundred yards away, Luz shook my hand hard—and it wasn’t a fake “smile with a broken heart” sort of grip, either.
You can melt down all the gold medals and cups I have, and they couldn’t be a plating on the 24-carat friendship I felt for Luz Long at that moment. I realized then, too, that Luz was the epitome of what Pierre de Coubertin, founder of the modern Olympic Games, must have had in mind when he said, “The important thing in the Olympic Games is not winning but taking part. The essential thing in life is not conquering but fighting well.”
Read the extract given below and answer the question that follow.
Why did Hitler glare at Luz Long and Jesse Owens?
They stood in the doorway of the underground for a moment until it was raining hard. Then they closed the door and heard the gigantic sound of the rain falling in tons and avalanches, everywhere and forever.
“Will it be seven more years?” “Yes. Seven.” Then one of them gave a little cry. “Margot!” “What?” “She’s still in the closet where we locked her.” “Margot.”
They stood as if someone had driven them, like so many stakes, into the floor. They looked at each other and then looked away. They glanced out at the world that was raining now and raining and raining steadily. They could not meet each other’s glances. Their faces were solemn and pale. They looked at their hands and feet, their faces down. “Margot.” One of the girls said, “Well.. .?” No one moved. “Go on,” whispered the girl. They walked slowly down the hall in the sound of the cold rain. They turned through the doorway to the room in the sound of the storm and thunder, lightning on their faces, blue and terrible. They walked over to the closet door slowly and stood by it. Behind the closed door was only silence. They unlocked the door, even more slowly, and let Margot out.
Read the extract given below and answer the question that follow.
When would the Sun shine again? Why had the children locked Margot in the closet?
Grandmother’s prophecy was that the tiger
Mark the right answer.
Mridu had noticed in front of Meena’s house a pair of chappals. Whom did they belong to?
What preparations did the kind old couple make for the New Year?
What do you know about the Viking Mission to Mars?
Why did Vijay Singh say “Appearances can be deceptive”?
What does the child’s mother say about snakes?
What did Miss Beam teach the children at her school?
Read the following sets of words loudly and clearly.
cot – coat
cost – coast
tossed – toast
got – goat
rot – rote
blot – bloat
knot – note
Why did Nishad and Maya get a holiday?
Which of the following statements is used by Angelou to describe the caged bird?
