Kerala PSC Previous Years Question Paper & Answer
Page:10
Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'HSA Physical Science (Malayalam Medium) NCA' And exam conducted in the year 2019. And Question paper code was '055/2019/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.
At-E =o/ 0
B:-E = 20/5
C:-E =2/o ०
D:-E =07/2 ५
Correct Answer:- Option-A
Question29:-The work done per unit volume of a twisting wire is
A:-W=1/2 (stress x strain x mass)
B:-W (stress x strain x mass)
C:-W= 1/2 (stress x strain)
D:-W= 1/2 stress / strain
Correct Answer:- Option-C
Question30:-The couple per unit twist of a wire of radius r length | having bulk modulus 'n' is
ಸಟೆ مجم
21
B:-C =anr*
21
ബ്ബ
21
D:-C =ani*
2r
Correct Answer:- Option-B
Question31:-For progressive wave reflected at a rigid boundary