XAT 2014 — VARC Question 10
Read the definitions below and select the best match between the numbered sentences and the definitions.
Premise: A proposition from which another statement is inferred or follows a conclusion.
Assumption: Something, which is accepted as true.
Facts: Something, which can be checked.
Reason: A cause, explanation or justification for an action or event.
Conclusion: An end, finish or summarization of process or argument.
Proposition: A statement that expresses judgment or opinion.
Question: A sentence worded or expressed so as to elicit opinion.
Inductive inference: An end, finish or summarization reached for “the whole”, based on “a particular” real incidence.
Deductive Inference: An end, finish or summarization reached based on the combining and recombining two or more than two assumptions.
Fill in the blanks with the most appropriate option that follows:
In many cases in physics, one has to deal simultaneously with collective and single-particle excitations of the system. The collective excitations are usually bosonic in nature while the single-particle excitations are often fermionic. One is therefore led to consider a system which includes bosons and fermions. Hence, ______________
Which of the following options is most likely to follow the paragraph given above?
Answer & solution
- A
in this book, we discuss application of bosonic particles and their consequences on physics.
in this book, we discuss application of general algebraic theory of mixed Bose- Fermi systems to atomic nuclei.
- C
in this book, we discuss excitations of collective and single particles separately.
- D
in this book, we prove how collective excitations are bosonic and singular excitation are fermionic.
- E
in this book, we prove that collective and singular excitation cannot exist together.
The crux of the paragraph is explained in the second last line - “One is therefore...includes bosons and fermions”. Hence, the correct answer must take both aspects into consideration. This points to option 2.
Option 1 is ruled out as it only focuses on “bosonic particles”.
Options 3 and 5 contradict what the paragraph conveys.
Option 4 simply goes on to repeat what has already been stated in the passage.
Hence, the correct answer is option 2.