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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Lr in Physics' And exam conducted in the year 2015. And Question paper code was '003/2015/OL'. 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.
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C:non holonomic and schleronomic
D:-holonomic and schleronomic
Correct Answer:- Option-D
Question28-If generalized coordinate has the dimension of velocity, then corresponding generalized velocity has the dimension of
۸-16
B:-displacement
Cevelocity
D:-acceleration
Correct Answer:- Option-D
Question29--A particle of rest mass energy of 8MeV is moving with energy 10 MeV. Find momentum of the particle in MeV/c
8-بھ MeVic
B:-10 MeVic
C6 Mevic
D5 Mevic
Correct Answer:- Option-C
Question30-A particle is moving in an inverse square force field. If the total energy of the particle is positive, then the trajectory of the particle will be
Achyperbolic
B-elliptical
C:parabolic
Ds-cireular
Correct Answer:- Option-A
‘Question3 1-What is the frequency of the electromagnetic radiation that can just ionise H atom?
Ar13.6x107'9 Hz
B:-3.29x10°5 Hz
പി
D:-3.29%10'5 Hz
Correct Answer:- Option-D
(Question32-A He-Ne laser emits radiation with wavelength 633nm. How many photons are emitted per second by this laser with a power of 1 milliwatt?
Arto!
വില്
ധി
5:-633×10-9
Correct Answer:- Option-C
(Question33-Which among the following is the correct commutation relation?
കിട
27
Correct Answer:- Option-A
Question34-A particle of mass m moves freely inside a one dimensional impenetrable box of side a. What is the lowest energy eigen value of the particle?
Correct Answer:- Option -B
Question35:Fine structure constant a is given by
3
D:
Correct Answer:- Option-A
‘Question36:What is the change arises in ground state energy of a harmonic oscillator of frequency w, if there is an anharmonic term of x‘ in the potential?
धारणः
ர
ಸಾಸ್
ர
7
28
फ
Correct Answer:- तकण
Question3 7-For a system of two identical particles, each of which can be in one of n quantum states. Then number of antisymmetric states of the system is
முட்டு
D=nin+ 1)
Correct Answer:- Option-C
Question38-Dirac’s relativistic quantum theory leads to the discovery of which particle?
ബന്നാ
B:-Electron
CePositron
D:-Neutron
Correct Answer:- Option-C
‘Question39:What is the energy of a photon of wavelength 300nm?
۸301
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04/24/2015 12:06 PM