Kerala PSC Previous Years Question Paper & Answer
Page:9
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'SCIENTIFIC OFFICER (PHYSICS) -KERALA POLICE SERVICE (FORENSIC SCIENCE LABORATORY)' And exam conducted in the year 2021. And Question paper code was '019/2021'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
46.
47.
48.
49.
50.
51.
52.
53.
A system can occupy energy level — 8/2 or 8/2. Then the partition function of the system
is
(^) Z=cosh (=) (B) Z=2 cosh (£)
(൭ Z=sinh (£| (D) Z=2sinh लि
The Gibbs function per particle of a thermodynamic system is called as
(A) Helmholtz function (8) Enthalpy
(C) entropy (D) Chemical potential
Which among the following proportionality is true about Einstein’s A and B co-efficients
and the frequency ?
A A
(A) eee (8) ae
© Sao (0) ~
B
At high temperatures, the molar heat capacity of a Debye solid saturates to a value of
(A) 3R (B) नः
(0 2R (D) ௩
The occupancy of the states for fermions is given by
1 டட 1
رے مم (B) n= چو ت۴
1 5 1
(C) m= 1_ மான (0) n= 1
(A) 5
The abrupt accumulation of atoms in the ground state at temperatures below T, is called
(A) _ superconducting transition (8) superfluidity
(C) supersaturation (D) Bose-Einstein condensation
A white dwarf star is
(A) 8 degenerate Bose gas. (8) anon-degenerate Fermi gas.
(C) adegenerate Fermi gas. (D) anon-degenerate Bose gas.
Which among the following is NOT true about atomic nuclei ?
(A) The atomic number Z equals the number of protons in the nucleus.
(B) The neutron number N equals the number of neutrons in the nucleus.
(C) The mass number A equals the number of nucleons in the nucleus.
(D) The isotopes of an element have the same A value but different N and Z
values.
9 | 019/2021
[P.T.0.]