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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.
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Which among the following numerical quantity corresponds to the magnitude of nuclear
density ?
(A) 10१ kg/m? (B) 1012 kg/m?
(0) 107 kg/m3 ற) 103 kg/m3
The magnetic resonance imaging (MRI) works exceptionally well for viewing internal
tissues in human body. Which among the following is the most likely reason for this ?
(A) About two-thirds of the atoms in the human body are hydrogen.
(B) Human body does not absorb radio waves.
(C) RF signals cause no damage to the cellular structures.
(D) Tissues do not absorb magnetic energy.
Identify the missing particle in the nuclear decay
240+ وت ہج
Electron (B) Positron )^(
(C) Neutron (D) Proton
Which is the stable end product of the Neptunium radioactive series ?
५) ष ©) द
இ (0) रछा ©
Which among the following force carrying particles are exchanged in strong nuclear
interaction ?
(A) प~ bosons (8) Gluons
(0) 70006005 (D) Photons
Which is the practical application of pair annihilation process in medical diagnostics ?
(A) Linear accelerator (B) CT scanning
(C) Positron emission tomography (D) Magnetic resonance imaging
Identify the reaction that does not conserve strangeness:
(A) श + ->16०+ 440 (B) wtp 04
(0) 70 + رم -8 + رج തക
Which of the following is the quark structure of the (27 particle ?
(4) மாம் (B) uss
(ಲ) ம (2) 555
The ratio of thermal to electrical conductivity (K/o) for any metal is proportional to its
temperature T. This is statement is known as
(4) Lorentz law ൯) Ohm’s law
(6) Wiedemann-Franz law (2) ബടെ law
019/2021 7 0 1 10 A