The number of categories in which physical quantities are divided is_____________?
(A) 1
(B) 2
(C) 3
(D) 4
Which one is not a branch of physical sciences ?
(A) Chemistry
(B) Astronomy
(C) Geology
(D) Biology
Absolute uncertainty in a measurement depends upon______________?
(A) The magnitude of the measurement
(B) Least count of the instrument
(C) Percentage error in the measurement
(D) All of a, b and C
Three students measured the length of a needle with meter rod and recorded as : (i) 0.2145m (ii) 0.21m (iii) 0.214m Which one is a correct record ?
(A) Only (i)
(B) Only (ii)
(C) Only (iii)
(D) Both (i) and (ii)
SI unit of the coefficient of viscosity is___________________?
(A) Kg.m.S-1
(B) Kg m-1.S-1
(C) Kg.m.S
(D) Kg-1.m-1.S-1
Dimensional analysis is helpful for__________________?
(A) Deriving a possible formula
(B) Checking the homogeneity of a physical equation
(C) Verification of laws
(D) Only A and B are correct