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Prevost Theory of heat Exchange
According to Prevost, a body emits heat radiations at all temperatures which is independent of surroundings but the quantity of heat ...
Newton's First Law of Motion
Newton's First Law of Motion Newton's first law of motion states that every object in the universe continues in its state of rest o...
Biochemical Theory of Origin of Life
This theory was proposed by two scientists. Alexander Ivanovich Oparin (1923) and J.B.S. Haldane (1928) independently. They stated that th...
Introduction to Chitwan National Park
National Parks, Conservation Area and Wildlife Reserves of Nepal Chapter-1 Chitwan national Park Chitwan National Park, t...
Privacy Policy
Privacy Policy Your privacy is important to us. To better protect your privacy we provide this notice explaining our online information pra...
Laboratory Protocal
Inportance of Practical Work Practical work is an es: ential part of a course in biology. It is a systematized study based on facts and ob...
Electrons and Photons- Short Question-Answers-4
Electrons and Photons 7. Which metals are suitable for photoelectric effect? Why? Ans: The metals (generally alkali metals) which ...
Newton's Third Law of Motion
Experiment to demonstrate that forces exist in pairs. i. A book lying on a table exerts a force equal to its weight on the table in the d...
Gravity and Gravitation
Gravity and Gravitation The force by which the Earth pulls objects downwards towards its center is called the force of gravity. Due to th...
Short Question-Answers about waves and optics
Waves and optics 1. Can two independent sources of light produce interference? Ans: Two independent sources cannot be coherent bec...
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Prevost Theory of heat Exchange
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Biochemical Theory of Origin of Life
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Newton's Third Law of Motion
Gravity and Gravitation
Short Question-Answers about waves and optics
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