Physics 5 Marks Questions

In India, illogical practices and superstitious attitudes have a complex and long origin that are deeply routed in the society and there is no shortcut way to eradicate them. Some of the factors that give birth to these practices are: Caste system Urge to rule others by keeping them ignorant. Denying of education to larger sections of the society. Self interest of ruling and landlord classes Lack of scientific knowledge to the people. To counter these attitudes, the advances in science and technology are to be used to educate people at mass scale which can be done by using electronic mass media like radio, T.V., Newspaper and science exhibitions. Parents are to be encouraged to send their wards to school for education. This can be developed by developing curiosity among them to know more about the things around them; making them not to believe in superstitions and false beliefs. Top priority is to be given by science to device a method to control the population explosion of our country, thus the people will have a faith in scientific process and techniques.

There is no difference in the ability of women and men as far as work, intelligence, decision making is concerned. Nature makes little difference in the anatomy and feeling of men and women. The nutrition content of prenatal and postnatal diet contributes a lot towards the development of a human body. If equal opportunities are provided to both women and men, then the female mind and body will be just as efficient as a man’s. The list of great women who have excelled in their respective fields is enormous. Names of. → Madam Curie, → Indira Gandhi, → Florence Nightingale, → Margaret Thatcher, → Mother Teresa, → Sarojini Naidu, → Kalpana Chawla, been taken from fields varying from sociology to science and they all very well-known for their contribution to the world.

Some of the key contemporary areas of science and technology which may transform the society radically are: → Development of super fast computers. → Internet and tremendous advancement in information technology. → Development in Biotechnology. → Development of super-conducting materials at room temperature. → Development of robots.

It is said that word ‘impossible’ is missing in the dictionary of a politician. Politics is, therefore, treated as an art of making every impossible thing possible for a politician. Similarly, there is hardly any scientific problem which cannot be solved by a scientific approach. Science is therefore treated as an art of getting solutions for those problems also which appear to have no solution because even most complex phenomena of nature have their explanations in terms of a few basic laws of physics.

A common observation in our daily life is that light travels in straight line. When Huygens propounded his wave theory, it was against the accepted belief. However, soon it became a dogma as reflection, refraction etc., could be successfully explained on the basis of wave theory. When photoelectric effect was discovered then it was found that wave theory of light cannot explain the phenomena and we came to a conclusion that light truely has dual characteristic. It may behave both as wave and a particle. We may consider other similar examples from the history of science.

More than two centuries ago, England and Western Europe invented steam engine, electricity, theory of gravitation and the explosives. Steam engines helped them in the field of hat and thermodynamics, theory of gravitation in field of motion and making guns and cannons. These progresses brought about industrial revolution in England and Western Europe.

Many phenomena which are based on the assumption of existence of atoms have been theoretically predicted and experimentally verified. These phenomena indirectly establish the existence of atoms. But no such phenomenon has been observed which proves the existence of ghosts or which can be explained on the assumption of ghosts.

There is no difference in the ability of women and men as far as work, intelligence, decision making is concerned. Nature makes little difference in the anatomy and feeling of men and women. The nutrition content of prenatal and postnatal diet contributes a lot towards the development of a human body. If equal opportunities are provided to both women and men, then the female mind and body will be just as efficient as a man’s. The list of great women who have excelled in their respective fields is enormous. Names of. → Madam Curie, → Indira Gandhi, → Florence Nightingale, → Margaret Thatcher, → Mother Teresa, → Sarojini Naidu, → Kalpana Chawla, been taken from fields varying from sociology to science and they all very well-known for their contribution to the world.

Some of the key contemporary areas of science and technology which may transform the society radically are: → Development of super fast computers. → Internet and tremendous advancement in information technology. → Development in Biotechnology. → Development of super-conducting materials at room temperature. → Development of robots.

S. No	Column A	S. No	Column B
1.	Newton	(xi)	England
2.	Michelson	(i)	USA
3.	Bhabha	(v)	India
4.	Landau	(vi)	U.S.S.R.
5.	Bohr	(ii)	Denmark
6.	Archimedes	(x)	Greece
7.	Galileo	(iii)	Italy
8.	Curie	(iv)	France
9.	Heisenberg	(vii)	Germany
10.	Yukawa	(ix)	Japan
11.	Boyle	(xi)	England
12.	Bernouli	(xii)	Switzerland
13.	Ohm	(xiii)	Germany
14.	Faraday	(xiv)	England
15.	Rutherford	(xv)	England

S. No	A. Technology	S. No	B. Scientific principle(s)
1.	Steam engine	(v)	Thermodynamics
2.	Nuclear reactor	(ix)	Fission of uranium by slow neutrons
3.	Radio and television	(i)	Propagation of electromagnetic waves
4.	Computers	(xi)	Digital logic of electronic circuits
5.	Lasers	(x)	Amplification by population inversion
6.	Production of ultra high magnetic fields	(iii)	Superconductivity
7.	Rocket propulsion	(ii)	Newton's laws of motion
8.	Genetic engineering	(iv)	Role of DNA in heredity
9.	Electric generator	(vi)	Faraday's law of induction
10.	Hydroelectric power	(vii)	Conversion of gravitational potential energy into electrical energy
11.	Aeroplane	(xii)	Bernoulli's principle in fluid dynamics
12.	Particle accelerators	(viii)	Motion of charged particles in electromagnetic fields.

In India, illogical practices and superstitious attitudes have a complex and long origin that are deeply routed in the society and there is no shortcut way to eradicate them. Some of the factors that give birth to these practices are: Caste system Urge to rule others by keeping them ignorant. Denying of education to larger sections of the society. Self interest of ruling and landlord classes Lack of scientific knowledge to the people. To counter these attitudes, the advances in science and technology are to be used to educate people at mass scale which can be done by using electronic mass media like radio, T.V., Newspaper and science exhibitions. Parents are to be encouraged to send their wards to school for education. This can be developed by developing curiosity among them to know more about the things around them; making them not to believe in superstitions and false beliefs. Top priority is to be given by science to device a method to control the population explosion of our country, thus the people will have a faith in scientific process and techniques.