Physical World - Online Test
Q1. The microscopic domain of physics deals with
Answer : Option C
Explaination / Solution:
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.
Q2. The microscopic domain of physics deals with
Answer : Option C
Explaination / Solution:
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.
Q3. Proper framework for explaining microscopic phenomena is
Answer : Option C
Explaination / Solution:
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.
Q4. What is central to the growth of physics?
Answer : Option D
Explaination / Solution:
Quantitative measurement is central to the growth of physics because Laws of nature happen to be expressible in more precise mathematical equations.
Q5. The basic laws of physics are universal means
Answer : Option C
Explaination / Solution:
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.
Q6. Scientists strategy in general is to
Answer : Option C
Explaination / Solution:
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.
Q7. To get the law of free fall under gravity, it is better
Answer : Option D
Explaination / Solution:
In ohysics, we can neglect some small forces, quantities and calculation.
Q8. Unification in physics refers to
Answer : Option D
Explaination / Solution:
Unification is the act of unifying the different laws valid for different phenomena in to a single theory that explains all the different phenomena.
Q9. Which of the following is not a synonym of axiom
Answer : Option C
Explaination / Solution:
An axiom or postulate is a statement/assumption that is taken to be true, to serve as a premise or starting or base point for further reasoning and arguments.
Q10. Axioms are
Answer : Option A
Explaination / Solution:
An axiom or postulate is a statement that is taken to be true, to serve as a premise or starting point for further reasoning and arguments.
