In an experiment the percentage of error occured in the measurement of physical quantities A,B C and D are 1 % , 2 % , 3 % and 4 % respectively . Then the maximum percentage of error in the measurement X , where will be :
(3/13) %
16 %
- 10 %
10 %
(1)
It is scalar quantity
(2)
Value of mass not depends on gravity
(3)
mass of a body is given by here symbol have their usual meaning.
(4)
mass can never be zero.
10esu=?dyn
A physical quantity of the dimensions of length that can be formed out of c, G and is (c is velocity of light, G is universal constant of gravitation and e is charge)
c) youngs modulus = stress/strain
strain is dimensioless
so dimension of stress= dimension of youngs modulus
The dimension of _{} are :
The dimesnions of
The dimension of where is permittivity of free space and E is electric field, is:
ML^{2}T^{-2}
ML^{-1}T^{-2}
ML^{2}T^{-1}
MLT^{-1}
The density of material in CGS system of units is 4g/cm^{3}. In a system of units in which unit of length is 10 cm and unit of mass is 100g, the value of density of material will be
0.4
40
400
0.04
Option 2=40