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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Non Vocational Teacher Physics (Junior & Senior)' And exam conducted in the year 2023. And Question paper code was '084/2023'. 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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084/2023

Maximum : 100 marks

Time : 1 hour and 30 minutes

1. 1 6(x) represents Dirac delta function, which of the following is wrong ?

(A) 6(x-a)=(-)d(a-x)

(8) [00 2-௦) -/(6)26-௦)

1

Id

௫) fF d-a) 6(x-b)dx=65 (ab)

(൭ dle(x-a)|=

6 (- ५) , where C is a real number

2. The value of Hermite polynomial H, (0) is given by:

(A) 1 (B) 0

(0 6 0) 06

3. | What is the value of the integral ("ao [sineaey,’ (6, ۲,۰۶ The spherical harmonic

یع

१ (6, சு P*(cos@), where P°(cos@) is associated legendre polynomial. (Y,°)*

೫

represents complex conjugate of y? :

(A) 0 © 1

8 1

¢^ ے D) —

© 47 (9 47

4. Which of the following is true about the Bessel and the neumann functions?

(A) Neumann function N,,(r) can represent a finite solution for Bessel’s equation at

r=0

(B) Bessel function J, (r) cannot represent a finite solution for Bessel’s equation at

r=0

(C) Most general solution of Bessel’s equation is AJ, (r)+ BN, (r) except at origin

r=0, where A and B constants

(D) Most general solution of Bessel’s equation is AJ, (r)+BN,,(r) including at origin

r=0

2

5. Consider the integral (cece , where c is a circle defined by 4-8. The value of the

27 -62-

integral is:

൧ (45 ®) 1641

(C) (೨1271 0) 127

A 3

[P.T.0.]

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