CBSE ADDA

CBSE ADDA: Motion and Rest Notes part 1 : "CBSE ADDA http://jsunilclasses.weebly.com/ Introduction to MotionIn the physical world, one of the most common phenomena is motion. T..." CBSE ADDA

CBSE ADDA: Motion and Rest Notes part 3 : "CBSE ADDA Distance-Time Graph for Uniform Motion Distance in km0102030405060 Time10.00 am10.15 am10.30 am10.45 am11.00 am11.15 am11.30 am T..." CBSE ADDA

CBSE ADDA: Motion and Rest Notes part 4 : "CBSE ADDA AccelerationAll of us know that a car moving on road does not have a uniform velocity. Either the speed or the direction changes...." CBSE ADDA

CBSE ADDA: Motion and Rest Notes part 5 : "CBSE ADDA Uniform Velocity and Non-uniform VelocityImagine that two athletes Ram and Shyam are running with a uniform speed of 5 m/s. Ram m..." CBSE ADDA

CBSE ADDA: Motion and Rest Notes part 6 : "CBSE ADDA Equations of MotionThe variable quantities in a uniformly accelerated rectilinear motion are time, speed, distance covered and ac..." CBSE ADDA

MCQ _ The Frog and the Nightingale - Multiple Choice Test Question:     Where does the frog croak? 1. In Bingle bog 2. From dusk to dawn 3. On the Sumac tree 4. On a toadstool Answer:     In Bingle bog Question:     What kind of reaction did the animals display to the frog's songs? 1. They hated it 2. They adored it 3. They ignored it 4. They tried to improve it Answer:     They hated it Question:     Why were the animals of the Bog dumbstruck? 1. The frog sang very well 2. The nightingale sang melodiously 3. The moon shone brightly 4. All the animals came to the same place Answer:     The nightingale sang melodiously Question:     One night when the nightingale was about to sing she was startled. What startled her

Poet: Vikram Seth  was born in Calcutta in 1952. He left India to study at Oxford where he earned degrees in philosophy, economics, and politics, and went on to study creative writing at Stanford and classical Chinese poetry in China at Nanjing University. His first novel, The Golden Gate, is written entirely in tetrameter sonnets, something that had never been done in the English language before. The Suitable Boy, his prose fiction debut, examined multigenerational Hindu or Muslim conflict in 1950s India and holds the distinction of being the longest single volume ever published in English. But Seth is much more than a literary statistic in the Guinness Book of World Records. Introduction Our self-image is often based on what others make us believe we are. A poor self-image can do irreparable damage to us.You are what you think you are. Our self-image is often based on what others make us believe we are. A poor self-image can do irreparable damage to us. Think of a

Self Evaluation test paper Matter  in our surrounding solved questions Q1 what are the states of Matter around us? Ans The matter around us exists in three states— solid, liquid and gas. Q2 In which state of matter there will be maximum force of attraction between particles? Ans. The maximum forces of attraction between the particles will be in Solid state. Q3 In which state of matter there will be maximum kinetic energy of the particles? Ans The maximum kinetic energy of the particles will be in gaseous state of matter. Q4 What do you mean by Sublimation Ans Sublimation is the change of gaseous state directly to solid state without going through liquid state,  and vice versa. Q5 What do you mean by Latent heat of vaporization? Ans Latent heat of vaporization is the heat energy required to change1 kg of a liquid to gas at  atmospheric pressure at its boiling point. Q6 What do you mean by Latent heat of fusion? Ans Latent heat of fusion is the amount of heat energy required

1. Differentiate between distance and displacement? 2. Derive mathematically the first equation of motion V=u + at? 3. Calculate the acceleration of a body which starts from rest and travels 87.5m 5sec? 4. Define uniform velocity and uniform acceleration? 5. Derive the second equation of motion, s = ut + ½ at 2 numerically? 6. Calculate the acceleration and distance of the body moving with 5m/s2 which comes to rest after traveling for 6sec? 7. A body is dropped from a height of 320m. The acceleration due to the gravity is 10m/s2? (a)How long does it take to reach the ground? (b) What is the velocity with which it will strike the ground? 8. Derive third equation of motion v2 -u2 = 2as numerically? 9. A body is moving with a velocity of 12m/s and it comes to rest in 18m, what was the acceleration? 10. A body starts from rest and moves with a uniform acceleration of 4m/s2 until it travels a distance of 800m, find the fi

Q.1: An athlete completes one round of circular track of diameter 200 m in 40 sec. What will be the distance covered and the displacement at the end of 2 minutes 20 sec? Ans:  Time taken = 2 min 20 sec = 140 sec. Radius, r = 100 m. In 40 sec the athlete complete one round. So, in 140 sec the athlete will complete = 140 ÷ 40 = 3.5 (three and a half) round. Or, distance covered in 140 sec = 2πr x 3.5 = 2 x 22/7 x 100 x 3.5 = 2200 m, Ans. At the end of his motion, the athlete will be in the diametrically opposite position. Or, displacement = diameter = 200 m, Ans. Q.2: Joseph jogs from one end A to another end B of a straight 300 m road in 2 minutes and 30 sec and then turns around and jogs 100 m back to point C in another 1 minute. What are Joseph’s average speeds and velocities in jogging (a) from A to B (b) from A to C? Ans:  (a) For motion from A to B:  distance covered = 300 m; displacement = 300 m. time taken = 150 sec. we know, average speed = distance covered ÷ time t

Chapter 3 - Democracy And Diversity Social division:- Division of the society on the basis of language, region, caste, colour or race and sex. It signifies linguistic and regional diversity. Social differences:- Social differences are the situations where the people are discriminated against on the basis of social, economic and racial inequality. It gives way to social diversity which is different from society to society. The black power: It was a movement started by black people in 1966 against racialism and the practice of apartheid. It was a militant movement advocating even violence if necessary to end racism in the US. Overlapping differences: Social differences which overlap other differences are known as overlapping differences e.g., difference between the blacks and whites became a social division in US because the Blacks tend to be poor homeless and discriminated against. Cross-Cutting Differences: If social differences cross cut one another, it is known as c

Federalism: Federalism is a system of government in which the power is divided between a central authority and various constituent units of the country. Unitary System: Unitary system is a system of government in which either there is only one level of government or sub units are subordinate to the central government. Jurisdiction: The area over which someone has legal authority, that area may be defined in terms of geographical units or in terms of geographical units or in terms of certain/specific matters, is known as Jurisdiction. Tier system: Tier system is the system which signifies levels of government. It may be two levels or two tiers and three levels or three tier. Coming Together Federation: It is a type of federation in which independent states come together on their own to form a bigger unit, so that by pooling sovereignty and retaining identity they can increase their security. Holding Together Federation: It is a type of federation in which a large country deci