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What physical quantities have no units?
The quantity which has no unit is a constant term. Complete step by step answer: Relative density is the ratio of density of substance and density of reference substance. Here, we can observe from the above formula that relative density is ratio of density and density.
Do all physical quantity have units?
(Note that electric current will not be introduced until much later in this text.) All other physical quantities, such as force and electric charge, can be expressed as algebraic combinations of length, mass, time, and current (for example, speed is length divided by time); these units are called derived units.
Does not have a unit?
The correct answer is Strain.
Which thing has no unit?
Explanation: Strain is a good example, because it is the ratio of original length to extended length, the units cancel and it is dimensionless. This is the correct term for ‘having no units’. Coefficients of friction also fall into this category.
Can a quantity have dimensions but still have no units?
No, a quantity can’t have dimensions without having unit because dimensions are derived from units but the inverse isn’t true. A quantity can have unit without having dimensions.
Can there be a physical quantity which has no unit and no dimension?
Can there be a physical quantity which has no units and no dimensions. Yes, for example, strain has no units and no dimensions.
Which physical quantity has no unit and no dimension?
(a) A plane angle is an example of a physical quantity which has unit but no dimension since, plane angle = arc/radius in radian & solid angle.
Which term has no unit?
Answer : Molality is measured as and the unit is molal or moles per kg. Molarity is measured as and the unit is Molar or moles per liter. Mole fraction is calculated as and it does not have units as it is a fraction.
Can a physical quantity have unit but no dimension?
Yes, a quantity can have unit but no dimension. These are Dimensionless Quantities , some of which have units. This would be things like angles, proportions, or ratios. An example would be an angle of one radian.
Which has no units in chemistry?
Complete answer: Electronegativity is the tendency of the atom to attract the electrons towards itself when combined in a compound as defined by Pauling. Electronegativity is a relative term so it does not have any unit.
Can a quantity have neither units nor dimensions?
Answer: [A] Quantities having units, but no dimensions : Plane angle,angular displacement, solid angle. These physical quantities possess units but they does not possess dimensional formulas.
Which of the following is not the unit of concentration?
Which of the following is not the unit of concentration? Explanation: Concentration is moles per unit volume or mass per unit volume, so N/m3 cannot be a unit of concentration. 2.