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 'PHYSICS' And exam conducted in the year 2015. And Question paper code was '075/2015'. 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.
81.
32,
88.
34.
36.
37.
38.
PARTII
Answer ALL questions, Answer shall be limited to one paragraph.
Questions 31 to 38 carry 10 marks each.
Distinguish between Fraunhofer and Fresnel’s diffraction
Explain Nuclear Fusion,
Explain Raman Effect.
Show that a particle of rest mass my, total energy E and linear momentum P satisfies the
relation B =c® P* + m2c', where ¢ is the velocity of light in free space.
நிலம identical thin rings, each of radius, R meter are co — axially placed at distance R meter
apart. If Qi and Q: coulombs are respectively the charges uniformly spread on two rings.
What is the work done in moving a charge q from the centre of one ring to that of the other.
Draw the logic circuit for the following Boolean expreasion.
Y =(A+B) (B+C) . What are the “Y” values for the input combinations?
(@ 1,10 ) '1, 0,1 © 0,0,1.
In the x-ray diffraction of a set of crystal planes having d equal to 0,18am, a first order
7918061100 15 found to be an angle of 22¢. Find the wave length വ് x-ray. (Given Sin22° =0.208).
A wave function is given by
()= A@/LY *[sin(rx/ L) + 25in(27 2/ L)]
Find the value of A that will normalize the wave function in the space defined रन 05೫571.
(8 + 10 = 80)
4 75/2015