which of the following is not the name of a physical quantity?
a] impulse b} kilogram c] time 4] mass
Answers
Answer:
The correct answer is (b) kilogram.
Explanation:
Physical quantity:
A physical quantity is a measurable quantity in physics, and consequently a quantifiable physical property. Mass, amount of item, length, duration, temperature, electric current, intensities, force, mobility, density, and many more physical quantities are examples. From the provided options kilogram represents the unit of physical quantity and not a physical quantity. Some physical quantities are Time, Amount of substance, Luminous intensity, Mass etc.
Answer:
Among all the given quantities (B) Kilogram is not a physical quantity.
Explanation:
The quantities which can be measured by an instrument and by means of which we can describe the laws of physics are called physical quantities.
In this question,
A) Impulse- It is the integral of a force over the time interval and Impulse applied to an object produces an equivalent vector change in its linear momentum, also in the resultant direction and hence can be measured, so it is a physical quantity.
B) Kilogram- kilogram is a unit of a physical quantity (Mass) and it can not be measured. So, it is not a physical quantity.
C) Time- Time at the fundamental level consists of the frequency oscillations of matter particules, and thus time is locally generated and a property of matter. So, it is a physical quantity.
D) Mass- Mass is the quantity of matter contained in a body and any thing which can be measured is called physical quantity, so mass is also a phycial quantity.
#SPJ2