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Yogita Ingle 4 years, 9 months ago
- The per capita income in an underdeveloped economy is low,and therefore,majorityof the population live below the poverty line. Consequently, people in this economy live in miserable conditions.
- In mostunderdeveloped economies, the population growth rate is very high as compared to the other economies. Also, because of improved medical facilities, the mortality rate among all the sections of societyis reduced. As a result, as the population increases, the consumption of the limited resources also increases, resulting in less saving of resources and a slower growth rate.
- For many under developed economies enriched with large and sufficient resources,most of these resources remain underutilised because oflack of skilled personnel and technology.
- Underdeveloped economies suffer from widespread unemployment. Because of various reasons,such as rapid population growth and lack of investment, unemployment prevails in such an economy. It is estimated that underemployment and unemployment together constitute nearly30% of the workforce of an underdeveloped economy.
- Inequality in the distribution of income is prevalent in these economies. As a large part of the national income goes to smaller sections of society, the larger sections of society have to be satisfied with whatever part of income is available to them. According to the Human Development Index, the top 20% of India’s population receives 45.3% of the national income,while the poorest 20% of the population receives 8.1% of the national income.
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Gaurav Seth 5 years, 1 month ago
A galvanometer is a device used to detect feeble electric currents in a circuit. It has a coil pivoted (or suspended) between concave pole faces of a strong laminated horse shoe magnet. When an electric current passes through the coil, it deflects. The deflection is proportional to the current passed. The galvanometer coil has a moderate resistance (about 100 ohms) and the galvanometer itself has a small current carrying capacity (1 mA).An ammeter is a device used for measuring large electric currents in circuits. For this purpose, it is put in series with the circuit in which the current is to be measured.Conversion
A galvanometer can detect only small currents. Thus, to measure large currents it is converted into an ammeter. It can be converted into an ammeter by connecting a low resistance called shunt resistance in parallel to the galvanometer.
Let G be the resistance of the galvanometer and Ig be the current for full scale deflection in the galvanometer, the value of the shunt resistance required to convert the galvanometer into an ammeter of 0 to I ampere is,
S = I g G I I g
Ig is calculated using the equation, Ig = nk, where n is the number of divisions on the galvanometer and k is the figure of merit of galvanometer.
What is figure of merit of a galvanometer?
The figure of merit of a galvanometer is defined as the current required in producing a unit deflection in the scale of the galvanometer. It is represented by the symbol k and is given by the equation,k {tex}= \frac { E }{ { (R+S) }^{ 0 } }{/tex}
Where E is the e.m.f. of the cell and is the deflection produced with resistance R.
Let l be the length of the resistance wire required for a resistance of S ohm,
Then l=πr2 / ρ * S
where, r is the radius of the wire and is the resistivity of the material of the wire.
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Yogita Ingle 5 years, 2 months ago
Capacitanceis denoted by, C = Q/V. It depends on:
- Geometrical configuration (shape, size, separation) of the system of two conductors.
- Nature of insulator/dielectric separating
Posted by Sonam Choudhary 5 years, 3 months ago
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Yogita Ingle 5 years, 3 months ago
Useful Microorganisms
- These form a significant part of the ecosystem and participate in the production of minerals and gases like oxygen, carbon dioxide.
- They also feed on the dead and decaying matter by converting the complex compounds into the simpler ones.
- The biogeochemical cycle such as the nitrogen cycle is an important example of useful microorganisms.
- Microorganisms are used in various industries for the production of various metabolites such as ethanol, riboflavin, lactic acid, and butanol.
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Yogita Ingle 5 years, 8 months ago
Newton’s Third Law of Motion states that there is always reaction for every action in opposite direction and of equal magnitude.
Explanation: Whenever a force is applied over a body, that body also applies same force of equal magnitude and in opposite direction.
Example:
- Walking of a person: A person is able to walk because of the Newton’s Third Law of Motion. During walking, a person pushes the ground in backward direction and in the reaction the ground also pushes the person with equal magnitude of force but in opposite direction. This enables him to move in forward direction against the push.
- Recoil of gun: When bullet is fired from a gun, the bullet also pushes the gun in opposite direction, with equal magnitude of force. This results in gunman feeling a backward push from the butt of gun.
- Propulsion of a boat in forward direction: Sailor pushes water with oar in backward direction; resulting water pushing the oar in forward direction. Consequently, the boat is pushed in forward direction. Force applied by oar and water are of equal magnitude but in opposite directions.
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