Kerala PSC Previous Years Question Paper & Answer
Page:11
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 Education Department' 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.
A:-particle velocity is reversed
B:-phase of pressure variation is reversed
C:-no change in phase
D:-particle velocity remains constant
Correct Answer:- Option-A
Question32:-Excess pressure inside a soap bubble of radius r and surface tension T is
:م
B:-P=4T/r
C:-P=2T/r
D:-P= 27T
Correct Answer:- Option-C
Question33:-The critical velocity of liquid is
A:directly proportional te velocity of a liquid
B:-inversely proportional to its density
C:-inversely propertional to radius if the tube
D:-All of these
Correct Answer:- Option-D
Question34:-The terminal velocity of a water drop of radius r falling through the air (the coefficient of viscosity
of air is 1.8x10™ SI Unit) is
A:-0.12m/s
B:-0.102m/s
C:-0.012m/s