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Yogita Ingle 7 years, 1 month ago
- It is not possible to even walk on the road; in the absence of friction. Walking on ice is almost impossible because of lack of friction.
- Friction is necessary to keep a ladder against a wall. The ladder will not find grip against the wall in the absence of friction.
- It is very difficult to drive on a wet road because of less friction. A thin film of water is made over the surface of road. This thin film of water greatly reduces friction. Due to this, the driver finds it difficult to control the vehicle while driving on a wet road.
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Yogita Ingle 7 years, 1 month ago
The population of undivided India in 1947 was approx 390 million. After partition, there were 330 million people in India, 30 million in West Pakistan, and 30 million people in East Pakistan (now Bangladesh).
Posted by Divya Pintos 7 years, 1 month ago
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Yogita Ingle 7 years, 1 month ago
The Constitution was adopted by the Indian Constituent Assembly on 26 November 1949 and came into effect on 26 January 1950 with a democratic government system, completing the country's transition towards becoming an independent republic.
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Yogita Ingle 7 years, 1 month ago
A group of men and women carrying basket-loads of iron are known as the Agaria. The Agarias are a community of iron smelters. They are specialised in the craft of iron smelting.
In the late 19th century a series of famines devastated the dry tracts of India. In central India, many of the
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Yogita Ingle 7 years, 1 month ago
Hot air is less dense than cold air and hence air pressure will exert an upwards force, in the same way air rises in water. Now if cold air was magically unaffected by gravity, then it would not be able to exert pressure on the hot air and thus it would not rise.
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Yogita Ingle 7 years, 1 month ago
Retrograde motion in astronomy is, in general, orbital or rotational motion of an object in the direction opposite the rotation of its primary, that is the central object . It may also describe other motions such as precession or nutation of the object's rotational axis.
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Yogita Ingle 7 years, 1 month ago
Non cooperation movement was a mass movement which was launched by Gandhi in 1920. It was a peaceful and a non-violent protest against the British government in India.
Programmes of the Non Cooperation movement were:Indians were asked to relinquish their titles and resign from nominated seats in the local bodies as a mark of protest.
- People had to resign from their government jobs.
- People were asked to withdraw their children from government-controlled or aided schools and colleges.
- People had to boycott foreign goods and use only Indian-made goods.
The main aim of the Non Cooperation movement was the demand of 'Swaraj' or the self government.
Posted by Mohd Ruman 7 years, 1 month ago
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Yogita Ingle 7 years, 1 month ago
AB = 24cm , BC = 7cm
In triangle ABC, right angle at B
AC2 = AB2 + BC2
AC2 = (24)2 + (7)2
AC2 = 576 + 49
AC2 = 625
AC = 25
Sin A = 7/25
Cos A = 24/25
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Rectangle :
- Area = lb
- Perimeter = 2(l+b)
Square :
- Area = a×a
- Perimeter = 4a
Parallelogram
- Area = l × h
- Perimeter = 2(l+b)
Triangle :
- Area =b×h/2 or √s(s-a)(s-b)(s-c)…………….where s=a+b+c/2
Right angle Triangle :
- Area =1/2(bh)
- Perimeter = b+h+d
Isosceles right angle triangle :
- Area = ½. a2
- Perimeter = 2a+d……………………….where d=a√2
Equilateral Triangle :
- Area = √3. a2/4 or ½(ah)….where h = √3/2
- Perimeter = 3a
Trapezium :
- Area = 1/2h(a+b)
- Perimeter = Sum of all sides
Rhombus :
- Area = d1 × d2/2
- Perimeter = 4l
Quadrilateral
- Area =1/2 × Diagonal × (Sum of offsets)
Kite :
- Area = d1×d2/2
- Perimeter = 2 × Sum on non-adjacent sides
Circle :
- Area = πr^2 or πd^2/4
- Circumference = 2πr or πd
- Area of sector of a circle = (θπr^2 )/360
Frustum :
- Curved surface area = πh(r1+r2)
- Surface area = π( r12+ h(r1+r2) + r22)
Cube :
- Volume: V = l3
- Lateral surface area = 4a2
- Surface Area: S = 6s2
- Diagonal (d) = √3l
Cuboid :
- Volume of cuboid: lbh
- Total surface area = 2 (lb + bh + hl) or 6l2
- Length of diagonal =√(l^2+b^2+h^2)
Right Circular Cylinder :
- Volume of Cylinder = π r2 h
- Lateral Surface Area (LSA or CSA) = 2π r h
- Total Surface Area = TSA = 2 π r (r + h)
- Volume of hollow cylinder = π r h(R2 – r2)
Right Circular cone :
- Volume = 1/3 π r2h
- Curved surface area: CSA= π r l
- Total surface area = TSA = πr(r + l )
Sphere
- Volume: V = 4/3 πr3
- Surface Area: S = 4πr2
Hemisphere :
- Volume = 2/3 π r3
- Curved surface area(CSA) = 2 π r2
- Total surface area = TSA = 3 π r2
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