Tag: contribution of physics in technology and society

Questions Related to contribution of physics in technology and society

Classical physics is applicable to the

  1. microscopic world

  2. macroscopic world

  3. both microscopic and macroscopic world

  4. cannot say


Correct Option: B
Explanation:

Classical physics is applicable to macroscopic world.

Which of the following statements is not correct. ?

  1. Physics is the study of nature and natural phenomena.

  2. Physics and technology are not related to each other.

  3. Electrodynamics deals with electric and magnetic phenomena associated with charged and magnetic bodies.

  4. The physical quantities that remain unchanged in a process are called conserved quantities.


Correct Option: B
Explanation:

Complex technologies are making use of more rarefied physical concepts. Physics describes the things that are possible in the universe, and technology is eventually built to do work within that which has been discovered by physics. This interplay also works in reverse. Modern physicists are frequently making use of extremely high-tech machines and processes. For example, the Large Hadron Collider in Switzerland is the world's largest particle accelerator. It can be operated at higher energies than any previous one. It was built explicitly to perform experiments in particle physics.

Thus Physics and technology are very much related to each other. So statement B is not appropriate. Although the other three statements are very much correct and factful.

Thus option B is correct.

What is the two principal thrust in Physics?

  1. Unification and Reduction

  2. Unification and Oxidation

  3. Magnification and Reduction

  4. Simplification and Reduction


Correct Option: A
Explanation:

The principal thrust in physics is to unity all the fundamental forces into a single framework and reduce the no.of different theories to minimal no. of models which can describe a great number of a phenomenon. (a)

where Unification is the act of unifying the different laws valid for different phenomena into a single theory that explains all the different phenomena.

The reduction is breaking down of a complex system into simple constituent systems to so that laws of physics can be applied to these systems and we can understand the working of the complex system.

The approach to derive the properties of a bigger, more complex, system from the properties and interactions of its constituent simpler parts is called ____________.

  1. Reduction

  2. Simplification

  3. Unification

  4. Modification


Correct Option: A
Explanation:

The reduction is breaking down of a complex system into simple constituent systems to so that laws of physics can be applied to these systems and we can understand the working of the complex system.

Which of the following scientific phenomenon is involved in the generation of Hydroelectric power?

  1. Motion of charged particles in electromagnetic fields

  2. Conversion of gravitational potential energy into electrical energy

  3. Bernoullis principle in fluid dynamics

  4. Trapping and cooling of atoms by laser beams and magnetic fields.


Correct Option: B
Explanation:

In dams,the gravitational potential energy of water is used to turn the turbines which generate electrical energy.

Which of the following does not comes under microscopic forces?

  1. Normal force

  2. Tension force

  3. Frictional force

  4. All of these


Correct Option: D
Explanation:

Normal force,tension force and Frictional force,all are macroscopic forces.

The electric generator is based on which scientific principle?

  1. Reflection of ultrasonic waves

  2. Superconductivity

  3. Faradays laws of electromagnetic induction

  4. Magnetic confinement of plasma


Correct Option: C
Explanation:

Electric generator was faradays law of electromagnetic induction,a changing magnetic flux gives rise to electric current.

Which of the following phenomena does not come under macroscopic domain?

  1. Phenomena at laboratory scales

  2. Phenomena at terrestrial scales

  3. Molecular and nuclear phenomena

  4. Phenomena at astronomical scales


Correct Option: C
Explanation:

Molecular and nuclear phenomenon come under microscopic domain.

Bullet trains are example of invention related to which fields ?

  1. Medicine

  2. Transportation

  3. Education

  4. None of these


Correct Option: B

Heliocentric theory was proposed by ................

  1. Copernicus

  2. Ptolemy

  3. Newton

  4. Tychobrahe


Correct Option: A
Explanation:

Heliocentric theory is an astronomical model which was proposed by Polish astronomer Nicolaus Copernicus. In this theory, the sun is at the center of the solar system and all the planets and heavenly bodies revolve around it.