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Test: Physical World - 2


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30 Questions MCQ Test Physics Class 11 | Test: Physical World - 2

Test: Physical World - 2 for NEET 2022 is part of Physics Class 11 preparation. The Test: Physical World - 2 questions and answers have been prepared according to the NEET exam syllabus.The Test: Physical World - 2 MCQs are made for NEET 2022 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Physical World - 2 below.
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Test: Physical World - 2 - Question 1

Physics is a

Detailed Solution for Test: Physical World - 2 - Question 1

The natural sciences seek to understand how the world and universe around us works. There are five major branches (top left to bottom right): Chemistry, astronomy, earth science, physics, and biology.

Test: Physical World - 2 - Question 2

The microscopic domain of physics deals with

Detailed Solution for Test: Physical World - 2 - Question 2

Microscopic domain includes atomic,molecular and nuclear phenomena. It can be said as the study of matter.It includes the study of structure and configuration of atom,nucleus and the constitute particles of atom-electron,proton,neutron and interaction with elementary particles like electron,photon etc.

Test: Physical World - 2 - Question 3

Technology started with

Detailed Solution for Test: Physical World - 2 - Question 3

The history of technology is the history of the invention of tools and techniques and is similar to other sides of the history of humanity. Technology can refer to methods ranging from as simple as language and stone tools to the complex genetic engineering and information technology that has emerged since the 1980s.

Test: Physical World - 2 - Question 4

The sun releases energy coming from

Detailed Solution for Test: Physical World - 2 - Question 4

In addition to intense heat, there is an incredible amount of pressure at the Sun's core. In fact, the vast amounts of hydrogen atoms in the Sun's core are compressed and heated so much that they fuse together.This reaction, known as nuclear fusion, converts hydrogen atoms into helium. The by-product of nuclear fusion in the Sun's core is a massive volume of energy that gets released and radiates outward toward the surface of the Sun and then into the solar system beyond it.

Test: Physical World - 2 - Question 5

“Politics is the art of the possible. Similarly, Science is the art of the soluble”. Which of the following statements is a case of this aphorism?

Detailed Solution for Test: Physical World - 2 - Question 5

Science is a systematized study of observation. Scientist and researchers study these observations and then work out certain laws from them. There are multitude of natural phenomena taking place in this universe and all of them can be explained in terms of some basic laws.

Test: Physical World - 2 - Question 6

The word Science originates from the Latin verb Scientia meaning

Detailed Solution for Test: Physical World - 2 - Question 6

The phrase "scientia potentia est" (or "scientia est potentia" or also "scientia potestas est") is a Latin aphorism meaning "knowledge is power"

Test: Physical World - 2 - Question 7

Proper framework for explaining microscopic phenomena is

Detailed Solution for Test: Physical World - 2 - Question 7

Quantum mechanics (QM -- also known as quantum physics, or quantum theory) is a branch of physics which deals with physical phenomena at nanoscopic scales where the action is on the order of the Planck constant. It departs from classical mechanics primarily at the quantum realm of atomic and subatomic length scales.

Test: Physical World - 2 - Question 8

What is the correct sequence of events technology gives rise to new science or new science gives rise to technology?

Detailed Solution for Test: Physical World - 2 - Question 8

Technology is often a consequence of science and engineering, although technology as a human activity precedes the two fields. For example, science might study the flow of electrons in electrical conductors by using already-existing tools and knowledge. This new-found knowledge may then be used by engineers to create new tools and machines such as semiconductors, computers, and other forms of advanced technology.

Test: Physical World - 2 - Question 9

Weak Nuclear Force

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The weak nuclear force stops a neutron from decaying into a proton and an electron. When this happens, an electron leaves the atom. This is known as beta decay.

Test: Physical World - 2 - Question 10

No physicist has ever “seen” an electron. Yet, all physicists believe in the existence of electrons. An intelligent but superstitious man advances this analogy to argue that ‘ghosts’ exist even though no one has seen one. How will you refute his argument ?

Detailed Solution for Test: Physical World - 2 - Question 10

It is simply a superstition that ghost exist. There is not even single authentic evidence that ghosts exists. On the other hand it is a fact that atoms exists. There are many examples to prove this fact. Atomic power plant, atomic bombs, atomic clocks etc., exist of the correlation between two parts of the statement.

Test: Physical World - 2 - Question 11

The scientific method is

Detailed Solution for Test: Physical World - 2 - Question 11

The scientific method is a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. To be termed scientific, a method of inquiry is commonly based on empirical or measurable evidence subject to specific principles of reasoning.

Test: Physical World - 2 - Question 12

What is central to the growth of physics?

Detailed Solution for Test: Physical World - 2 - Question 12

Quantitative measurement is central to the growth of physics because Laws of nature happen to be expressible in more precise mathematical equations.

Test: Physical World - 2 - Question 13

Technology strives

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Science and technology will continue to generate all sorts of new enhancers, and the quest for enhancement is not necessarily unfair or unethical. We humans are inveterate enhancers, striving to increase our intelligence and to improve our memory and powers of perception.

Test: Physical World - 2 - Question 14

The difference between nuclear forces and electromagnetic forces is that

Detailed Solution for Test: Physical World - 2 - Question 14

The nuclear force does not depend upon the charge of nucleons.Nuclear forces usually depend upon the velocity of the nucleons.

Test: Physical World - 2 - Question 15

Which of these were not major technological advances during industrial revolution in England and Europe?

Detailed Solution for Test: Physical World - 2 - Question 15

In 1957, the world was surprised to see the Soviets launch the first satellite into orbit, with most expecting the USA to be the first to do so .Setallite technology got wings after this year which is so far after industrial revolution in England and Europe.

Test: Physical World - 2 - Question 16

Which of the following is a possible first step in applying the scientific method

Detailed Solution for Test: Physical World - 2 - Question 16

The scientific method starts when you ask a question about something that you observe: How, What, When, Who, Which, Why, or Where? For a science fair project some teachers require that the question be something you can measure, preferably with a number. 

Test: Physical World - 2 - Question 17

The basic laws of physics are universal means

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Laws of nature as expressed in physics as laws and theories are often said to be universal. This means that, so far as we have been able to test them, they apply everywhere and at every time, past, present and future.

Test: Physical World - 2 - Question 18

One example where technology predates science is

Detailed Solution for Test: Physical World - 2 - Question 18

Thomas Newcomen's atmospheric engine was the first commercial true steam engine using a piston, and was used in 1712 for pumping in a mine. 

Test: Physical World - 2 - Question 19

The fundamental force with the shortest range is

Detailed Solution for Test: Physical World - 2 - Question 19

There are four fundamental forces in nature which are Gravitational force, Strong force, Weak force and Electromagnetic force.

Gravitational Force: This force is the weakest but has an infinite range.

Strong Nuclear force: This force holds the nucleus of an atom together. It is the strongest of the forces. It acts over a range of about 10-15m.

Weak Nuclear Force: This force is weak compared to the strong force as the name implies and has the shortestrange of 10-18m

Electromagnetic Force: This is the second strongest force after the strong force and it acts on electrically charged particles. It has strength of 1/137 relative to the strong force but has an infinite range.

Test: Physical World - 2 - Question 20

Which of these was a major scientific major advance during industrial revolution in England and Europe?

Detailed Solution for Test: Physical World - 2 - Question 20

By the 1780s, the British Industrial Revolution, which had been developing for several decades, began to further accelerate. Manufacturing, business, and the number of wage laborers skyrocketed, starting a trend that would continue into the first half of the 19th century. This was the time when Louie Pasteur discover the link between microbes and illness.

Test: Physical World - 2 - Question 21

A scientific theory is accepted if

Detailed Solution for Test: Physical World - 2 - Question 21

A scientific theory is an explanation of some aspect of the natural world that can, in accordance with the scientific method, be repeatedly tested, using a predefined protocol of observations and experiments.Established scientific theories have withstood rigorous scrutiny and are a comprehensive form of scientific knowledge.

Test: Physical World - 2 - Question 22

Scientists strategy in general is to

Detailed Solution for Test: Physical World - 2 - Question 22

It is not practical to take into account all the complexities of a phenomenon in one go.A good and scientific strategy is to focus first on the essential features, discover the basic principles and then introduce corrections to build a more refined theory of the phenomenon by removing its less significant aspects.

Test: Physical World - 2 - Question 23

Macroscopic domain includes

Detailed Solution for Test: Physical World - 2 - Question 23

The macroscopic domain includes everyday and laboratory chemistry, where we observe and measure physical and chemical properties, or changes such as density, solubility, and flammability.

Test: Physical World - 2 - Question 24

In every conservation principle

Detailed Solution for Test: Physical World - 2 - Question 24

In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves over time. Exact conservation laws include conservation of energy, conservation of linear momentum, conservation of angular momentum, and conservation of electric charge.

Test: Physical World - 2 - Question 25

Which of these was a major technological achievement in ancient India?

Detailed Solution for Test: Physical World - 2 - Question 25

The Suśruta-saṃhitā is one of the most important surviving ancient treatises on medicine and is considered a foundational text of Ayurveda. The treatise addresses all aspects of general medicine, but the translator G. D. Singhal dubbed Suśruta "the father of surgery" on account of the extraordinarily accurate and detailed accounts of surgery to be found in the work. He has also been called "the first plastic surgeon".

Test: Physical World - 2 - Question 26

A scientific theory

Detailed Solution for Test: Physical World - 2 - Question 26

A scientific theory is not the end result of the scientific method; theories can be proven or rejected, just like hypotheses. Theories can be improved or modified as more information is gathered so that the accuracy of the prediction becomes greater over time.

Test: Physical World - 2 - Question 27

To get the law of free fall under gravity, it is better

Detailed Solution for Test: Physical World - 2 - Question 27

In physics, we can neglect some small forces, quantities and calculation.

Test: Physical World - 2 - Question 28

The major contribution of C.V. Raman was

Detailed Solution for Test: Physical World - 2 - Question 28

The Indian physicist C.V. Raman helped the growth of science in his country. He received the Nobel Prize for Physics in 1930 for the discovery that when light passes through a transparent material, some of the light changes in wavelength. This phenomenon is now called Raman scattering.

Test: Physical World - 2 - Question 29

For motion under an external conservative force

Detailed Solution for Test: Physical World - 2 - Question 29

Mechanical energy is the sum of the potential and kinetic energies in a system. The principle of the conservation of mechanical energy states that the total mechanical energy in a system (i.e., the sum of the potential and kinetic energies) remains constant as long as the only forces acting are conservative forces.

Test: Physical World - 2 - Question 30

What is the relation between morality and science?

Detailed Solution for Test: Physical World - 2 - Question 30

Science can help us learn about terminal illnesses and the history of human and animal rights — and that knowledge can inform our opinions and decisions. But ultimately, individual people must make moral judgments. Science helps us describe how the world is, but it cannot make any judgments about whether that state of affairs is right, wrong, good, or bad.

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