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Yogita Ingle 6 years, 5 months ago
The word hysteresis means lagging behind. The phenomenon of lagging of intensity of magnetisation (M) behind magnetic intensity (H), when a specimen of magnetic material is subjected to a cycle of magnetization is called hysteresis
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Yogita Ingle 6 years, 5 months ago
Phase difference (measured in radians): It is the difference in phase of two waves of same frequency. It is represented by ??.
In the above diagram, the blue wave leads the red wave by a phase difference of pi/2.
At time t = 0, the blue wave has displacement equal to 0, while that of red wave has negative displacement (-A).
At pi/2, the blue wave has maximum positive displacement(+A), while that of red wave is zero.
Hence Blue wave is leading by a phase difference of pi/2 and path difference of (lambda) ? /4.
Example:
Suppose two horses are running in a circular track with same speed and in same direction but their starting point is different. They will cross the same point at different times but there will be constant difference in time, each time they cross the point. Thus we can say that they are moving with constant phase difference. This is analogous to the two waves travelling with same frequency with some phase difference i.e. their starting point is different.
Posted by Abhishek Yadav 6 years, 5 months ago
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Yogita Ingle 6 years, 5 months ago
The exchange rate is the rate at which one currency is exchanged for another currency. It is the price of one currency in terms of the price of another currency. It is the value of one currency in terms of another in the international market.
The rise in the exchange rate implies a reduction in the value of the domestic currency. Thus, more units of domestic currency would be required to be paid for obtaining one unit of foreign currency. In this situation, the domestic currency is said to be depreciated. Depreciation is the reduction in the value of the domestic currency due to the actions of the forces of demand and supply. This raises the exchange rate and can affect the national income. This can influence the national income.
Exports can be promoted by the fall in the value of the currency. When the devaluation takes place, the domestic currency becomes cheaper in the international market compared other countries currency. This will lead to the purchase of the country’s exported good from other countries. Hence the devaluation by the country will increase the exports of the country and increase the national income in the short-run. But the strategy becomes ineffective in the long-run. A country having a depreciated currency will have huge deficits in their BOP in the long-run because of the increasing import bills. The devaluation makes the imports costlier resulting in the fall in national income in the long-run.
Posted by Vartika Joshi 6 years, 5 months ago
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Yogita Ingle 6 years, 5 months ago
Negative consequences of globalization on India:-
(i) Expensive seeds purchased from MNCs compelled farmers committing suicides due to crop failure.
(ii) Slowly and gradually MNCs started buying Indian companies, resulted in instability in market.
(iii)While some advances were made in certain arenas, critical sectors such as health, housing and primary education did not receive the attention they deserved.
(iv)India had a fairly sluggish rate of economic growth. In 1991, responding to a financial crisis and to the desire for higher rates of economic growth which yet to be achieved.
(v) De-regulated various sectors including trade and foreign investment. or any other relevant consequences.
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Yogita Ingle 6 years, 5 months ago
Monomers: The simple molecules which combine to form polymers by forming single or multiple bonds are called monomers.
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Human development is defined as the type of development that enlarges people's choices and improves their lives.
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Deeya Singh 6 years, 5 months ago
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