RAS RAS RAJASTHAN PUBLIC SERVICE COMMISSIONPCS Pre Paper

work energy and power

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Work energy and power Work is said to be done when a force applied on the body displaces the body through a certain distance in the direction of force.Mathematically, work is the force-displacement product (for those of you who prefer algebra) W = F x s cos a or the force-displacement path integral (for those … Read more work energy and power

Concepts of Law: Ownership and possession, Personality, Liability, Rights and Duties.

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CONCEPTS OF LAW: OWNERSHIP The idea of ownership developed by slow degrees with the growth of civilization. So long as the people were wandering from place to place and had no settled place of residence, they had no sense of ownership. The idea began to grow when they started planting trees, cultivating land, building their … Read more Concepts of Law: Ownership and possession, Personality, Liability, Rights and Duties.

Natural Hazards : Floods, Droughts, Cyclones, Landslides

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  Natural Hazards of India Disaster A disaster is a sudden, calamitous event that seriously disrupts the functioning of a community or society and causes human, material and economic or environmental losses that exceed the community’s capacity to cope using its own resources. Vulnerability + Hazard =Disaster Vulnerability- it is defined as the diminished capacity of … Read more Natural Hazards : Floods, Droughts, Cyclones, Landslides

   TERRESTRIAL ECOSYSTEMS

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    The interrelations between organisms and environment on the land constitute “Terrestrial Ecology”. The most important limiting factors of the terrestrial ecosystems are moisture and temperature.     TUNDRA The word tundra means a “barren land” since they are found where environmental conditions are very severe. There are two types of tundra- arctic and … Read more    TERRESTRIAL ECOSYSTEMS

Broad Physical features

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  Geomorphology Earth’s Interior – Earthquake Waves – Shadow Zone Most of the knowledge we have about Earth’s deep interior comes from the fact that seismic waves penetrate the Earth and are recorded on the other side.  Earthquake ray paths and arrival times are more complex than illustrated in the animations, because velocity in the … Read more Broad Physical features

Motion, laws of motion

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Motion Motion is a change in position of an object with respect to time. Motion is typically described in terms of displacement, distance, velocity, acceleration, time and speed. The branch of physics which deals with the study of motion of material objects is called mechanics. Mechanics is divided into following branches. (i) Statics : Statics … Read more Motion, laws of motion

CPI

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The Central Statistics Office (CSO) of the Ministry of Statistics & Programme Implementation announced that the new series of Consumer Price Index(CPI)  numbers for Rural, Urban and Combined (Rural +Urban) on base 2010 ( January to December)=100 taking all segments of rural and urban population for the month of January, 2011 will be released by the  Central Statistics Office for the States/UTs and all- India on 18th February, 2011.These indices will be available for five major groups namely Food, beverages and tobacco; Fuel and light; Housing; Clothing, bedding and footwear, and Miscellaneous.

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Natural Vegetation-Forest types and distribution, wild life, conservation, biosphere reserves

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  In India, at present forest areas cover about 76.5 million hectares of land, which is about 23 per cent of the total geographical area. It ranges from about 87 per cent in Andaman & Nicobar Islands to only about 4 percent in Haryana making to range difference of 83 percent. According to our National … Read more Natural Vegetation-Forest types and distribution, wild life, conservation, biosphere reserves

Photo electric effect

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The photoelectric effect The photoelectric effect is the emission, or ejection, of electrons from the surface of, generally, a metal in response to incident light.A material that can exhibit The photoelectric effect is said to be photoemissive, and the ejected electrons are called photoelectrons. The process was discovered by Heinrich Hertz in 1887. Attempts to … Read more Photo electric effect

The thrust of the Scientific Policy Resolution

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The thrust of the Scientific Policy Resolution, 1958 was on capacity-building in advancement of science as the foundation for making a strong nation, which had just freed itself from the shackles of colonial domination . The focus of the Technology Policy Statement, 1983 was attainment of technological self-reliance and building of national strength by reducing … Read more The thrust of the Scientific Policy Resolution