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Yogita Ingle 7 years, 7 months ago
Chipko movement was started in 1970’s in the Himalayas of Uttar Pradesh in order to prevent the illegal deforestation and destruction of forest and trees. Indian villagers, mainly the women have participated in this movement. They adopted Gandhian method of Satyagraha by hugging the trees and saving them from being cut down.
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Yogita Ingle 7 years, 7 months ago
| Breathing | Respiration |
| Breathing is a mechanical action involving the act of inhaling and exhaling. Breathing involves taking in oxygen from the environment and removal of carbon dioxide from the body. | Respiration also involves the process by which chemical energy stored in the food is released in the form of ATP along with carbon dioxide and water. |
| Breathing takes place in the respiratory organs called as lungs. | Respiration takes place in the cells. |
| Breathing is a physical and voluntary process. | Respiration is a chemical and involuntary process. |
| Breathing involves respiratory organs and the cells called as alveoli. | Respiration involves cells in the body an their organelles. |
Posted by Samarth Bansal 7 years, 7 months ago
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Yogita Ingle 7 years, 7 months ago
The gravitational constant, symbolized G , is a physical constant that appears in the equation for Newton's law of gravitation. Sir Isaac Newton, the English mathematician, quantified the behavior of the force of gravity . He noticed that the gravitational force between two objects is proportional to the product of their masses, and inversely proportional to the square of the distance between their centers.
According to Newton's law , given any two objects having mass m 1 and m 2 (in kilogram s) whose centers of mass are separated by a distance r (in meter s), there exists an attractive gravitational force F (in newton s) between the objects, such that:
F = Gm1 m2 / r 2
The value of G in this equation is approximately equal to 6.67 x 10 -11 newton meters squared per kilogram squared (N x m 2 x kg -2 ). This constant is uniform throughout the Solar System, and apparently throughout our galaxy and other galaxies in its vicinity.
Posted by Ishita Rathi 7 years, 7 months ago
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Yogita Ingle 7 years, 7 months ago
Convex Mirror is a curved mirror where the reflective surface bulges out towards the light source. This bulging out surface reflect light outwards and are not used to focus light. These mirrors forms a virtual image as the focal point (F) and the centre of curvature (2F) are imaginary points in the mirror that cannot be reached. This results in formation of images that cannot be projected on a screen as the image is inside the mirror. The image looks smaller than the object from the distance but gets larger as the object get closer to the mirror.
Uses of Convex Mirror
- Convex mirrors are often used in the hallways of buildings including stores, schools, hospitals, hotels and apartment buildings.
- They are used in driveways, roads, and alleys to provide safety to all the bikers and motorists at curves and turns and other places where there is a lack of visibility.
- They are also used in some automated teller machines as a handy security feature that allow user to see what all is happening behind them.
- They are used in passenger side mirror on a car and somewhere it is labelled as “objects in mirror are closer than they appear” to warn the driver.
Posted by Manas Jain 7 years, 7 months ago
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Yogita Ingle 7 years, 7 months ago
Lateral inversion is the effect produced by a plane mirror in reversing images from left to right. As we observe our image on a plane mirror, we can see that our left side is at the right side of the image and our right side is at the left side of the image. It is also known as perversion.
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Rock Star 7 years, 7 months ago
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