Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'SCIENTIFIC ASSISTANT DOCUMENTS POLICE FORENSIC SCIENCE LABORATORY' And exam conducted in the year 2016. And Question paper code was '020/2016'. 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.
8. If the operators A and B commute with H and [A, B] = تسین where C is another operator, then :
(A) [H, C)=H (೫) ])1,6 ٥
(0) (घ, © = £ (0) (11, 0] ೬1
9. If the quantum mechanical operators of two observables of a system do not commute, then :
(५) The observables are said to be incompatible
(B) The observables are said to be compatible
(C) Observables must be time independent
(D) Total energy of the system must be negative
10, How much energy is required to remove an electron from n= 8 state of hydrogen atom?
(A) 0.21 ७४ (8) -0.21eV
(ಲ) 13.6 6ए (0) 27.2 لاه
11. The ground state of a linear harmonic oscillator is -
(A) Trigonometric function (B) Gaussian function
(C) Hyperbolic function (D) Bessel function
2m,
12. The mass m of a moving particle is 7 , where m, is its rest mass. The linear momentum of
the particle is :
५ 2me फ) ह+
© 2 று; ह 3 [
१४४ (0) റ
13. Consider a 6 particle system with 5 particles arranged as a regular pentagon with the
6™ particle at the centre. If all the 5 particles are connected to the central one by rigid rods,
then the number of degrees of freedom for the system is :
(A) 18 (B) 6
©) 5 (0) 18
14. The homogeneity of time leads to the law of conservation of :
(A) Linear momentum (B) Angular momentum
(C) Energy () Parity
020/2016 4 A
