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Physics MCQs 1st Year
Chapter 1: MEASUREMENT
Q1. The SI standard of time is based on:
AA. the daily rotation of the earth
BB. the frequency of light emitted by Kr86
CC. the yearly revolution of the earth about the sun
DD. a precision pendulum clock
EE. none of these
Ans: EE
Q2. A nanosecond is:
AA. 109
BB. 10−9s
CC. 10−10 s
DD. 10−10 s
EE. 10−12
Ans: BB
Q3. The SI standard of length is based on:
AA. the distance from the north pole to the equator along a meridian passing through Paris
BB. wavelength of light emitted by Hg198
CC. wavelength of light emitted by Kr86
DD. a precision meter stick in Paris
EE. the speed of light
Ans: EE
Q4. In 1866, the U. S. Congress defined the U. S. yard as exactly 3600/3937 international meter.
This was done primarily because:
AA. length can be measured more accurately in meters than in yards
BB. the meter is more stable than the yard
CC. this definition relates the common U. S. length units to a more widely used system
DD. there are more wavelengths in a yard than in a meter
EE. the members of this Congress were exceptionally intelligent
Ans: CC
Q5. Which of the following is closest to a yard in length?
AA. 0.01m
BB. 0.1m
CC. 1m
DD. 100m
EE. 1000m
Ans: CC
Q6. There is no SI base unit for area because:
AA. an area has no thickness; hence no physical standard can be built
BB. we live in a three (not a two) dimensional world
CC. it is impossible to express square feet in terms of meters
DD. area can be expressed in terms of square meters
EE. area is not an important physical quantity
Ans: DD
Q7. The SI base unit for mass is:
AA. gram
BB. pound
CC. kilogram
DD. ounce
EE. kilopound
Ans: CC
Q8. A gram is:
AA. 10−6 kg
BB. 10−3 kg
CC. 1 kg
DD. 103 kg
EE. 106 kg
Ans: BB
Q9. Which of the following weighs about a pound?
AA. 0.05 kg
BB. 0.5 kg
CC. 5 kg
DD. 50 kg
EE. 500 kg
Ans: DD
Q10. (5.0 × 104) × (3.0 × 106) =
AA. 1.5 × 109
BB. 1.5 × 1010
CC. 1.5 × 1011
DD. 1.5 × 1012
EE. 1.5 × 1013
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THE HARE AND THE TORTOISE
THE HARE AND THE TORTOISE
Once upon a time, there was a large pond in a forest. A tortoise lived in that pond. He spent most of his time in the pond, but sometimes he would come out and lie in the sun. A hare had his hole nearby. Being neighbors, they became friends.
The hare was very proud of his speed. He thought none could defeat him in a race. He always laughed at the slow speed. of his Friend. At last the tortoise could not bear it anymore. One day, the tortoise asked the hare to run a race with him. The hare accepted the challenge. They agreed to run a race to a certain tree across the forest.
Early next morning the race began. The hare ran as fast as he could. He was very swift and soon he was out of sight. When. he had covered more than half of the distance, he turned around and looked back. The tortoise was nowhere to be seen. By this ·time he had reached an area, where the green grass was growing. Green grass is one of his weaknesses. He began to eat it. Then he thought the tortoise was so slow. That he could not catch up with .him. So he lay down under the cool shade 0f a tree and soon fell fast asleep.
In the meantime, the tortoise kept on creeping slowly but steadily. In. the way he saw the hare fast asleep. Although he was dead tired, yet he did not stop to take rest. When the hare woke up he looked back. It was almost sunset He could not see any sign of the tortoise. He thought that the tortoise was still far behind and ran asJast.as he could. But when he reached the winning post, he felt ashamed to see the tortoise sitting there. He had lost the race.
Moral: Slow and steady wins the race.
THE FARMER AND HIS SONS
THE FARMER AND HIS SONS
OR
UNION IS STRENGTH
Once upon a time there lived an old farmer in a certain village. He was rich and happy. But he had only one cause of worry. He had three sons who were always quarreling with one another. He advised them many times not to quarrel with one another but all in vain.
One day he fell seriously ill. He was much worried about the nature of the future relationship among his sons. He wanted to give then a practical piece of advice before his death. He sent one of them to bring some sticks and told him to tie them all together. When this was done he sent for all of his sons. They all came at once.
First, he gave that bundle to his youngest son and asked him to break it. He tried his best, but he could not. Then he asked the second one to try his strength. He was an athlete and he was very proud of his strength. He strained all his muscles9 but he, too, failed to break it finally, he asked the eldest son to break it but the result was the same. I seeing that all three. Had failed badly, he smiled and untied the bundle and gave one stick to each of them. Then he asked them to break those sticks. They broke the sticks easily.
This gave him a chance to give them the golden piece of advice. He picked up the pieces of the broken sticks in his hand and addressed them thus: "My sons! You have seen with your own eyes the fruit of unity. If you remain united among yourselves, your enemies will not be able to harm you. You will always succeed. But if you are disunited and continue quarreling with one another, you will be destroyed like these sticks". Saying these words, the old man died. His sons learnt a lesson and began to live unitedly after that.
Moral: UNION IS STRENGTH
THE FOOLISH STAG
THE FOOLISH STAG
Once a stag came to drink water at a pond. As he looked below, he saw his own reflection in the clear water. He was delighted at the sight of his beautiful horns which were large and branching and glittered in the sun. He was full of praise for them. He thought of himself as the most superior creature of the forest.
But when he had quenched his thirst, he set his eyes on his thin legs and small feet. He thought they were ugly. He became sad .and started cursing them. He considered Himself to be very unlucky because of those legs and feet.
As he stood there thinking very sadly he heard hunter Blow a horn. He knew what it meant and saw a pack of hounds coming like the wind. He realized the danger and ran at full speed to save his life. It was his thin legs and ugly feet I that carried him away beyond .the reach of the hounds. The hunters and hounds were left far behind him. Soon, however, he entered a thick forest. Here the trees grew so closely together that his horns were soon caught among them, and he was forced to stop.
He tried his best to free himself but all in vain. Soon after that the dogs arrived and tore the helpless poor stag to pieces but, before his death, he, sorrowfully thought. of his foolishness, to admire and be proud of his horns which had proved to be the cause of his death, while his legs, with which he found fault, would have carried him away to safety.
Moral: All that glitters is not gold.
Moral: All that glitters is not gold.
GREEDY DOG
THE GREEDY DOG
(PRB.1977, 1980, 1982, 1992)
Once upon a time there was a dog who felt very hungry. He wandered here and there in search of food but he could not. Find anything to eat. At last, he was very tired and hopeless. He sat down in front of a butcher's shop to take rest. He was looking at every passer-by. He thought someone might take pity oh him and threw a piece of meat towards him. But no such a kind-hearted person passed' that way.
Since he could bear hunger no more, he decided to steal, A piece of meat from the butcher’s shop. He waited and waited till he got a chance. A large number of customers had gathered round the shop. The butcher was busy in cutting the meat and dealing with the customers. A piece of meat fell on the ground. He at once took it in his mouth and ran away to the jungle to save himself and the piece of meat.
One his way he had cross a stream. When he had reached the middle of the bridge, he stopped for a while to look at the clear water flowing underneath. He saw his own shadow in it. He took this shadow for another dog with a very large piece of meat. He was not only foolish but also greedy.
So he decided to snatch it away from him. He jumped into to the stream and barked to frighten the other dog. As soon as he opened his mouth, his own piece of meat fell down into the water. When his body touched the surface of the water the other dog also disappeared. In this way, he lost own a piece of meat and remained hungry.
The Greedy Dog.
THE FOX AND THE GOAT
THE FOX AND THE GOAT
Once there was a thirsty fox. He went about in search of water and soon found a well with some water at its bottom. He jumped into it and drank water. He jumped many times but failed to come out of the well. He did not know what to do.
By chance, a thirsty goat passed that way. She looked into the Well and saw the fox. "What are you doing there? the. Goat said to the fox. The fox replied that he was drinking water. She then enquired whether the water was cool and sweet. ''Yes", replied the fox, "It is so cool and $Wee that I cannot leave drinking it". Then the fox told her told her to Jump if she wanted to have a drink.
The goat was foolish. She at once jumped into the well. The fox requested the goat to bend down a little and let himClimb up her back so that he could get out of there. He promised to help her in getting out of the well. The goat agreed and the fox climbed up her back. Then with the jump, he was out of the well.
The goat then asked the fox to help her in getting out of the well. While the fox was going away, he told her that she would not have jumped into the well if she had .any brains. Now she should go on drinking water ti.ll her master's arrival saying this fox ran away, leaving the goat in the well.
Moral: Look before you leap.