Fundamental and Derived Units

Question 1

What is Measurement

Answer 1

The process of comparison of an unknown quantity with a known standard quantity

Question 2

what is fundamental unit

Answer 2

The unit of fundamental quantities. those quantities which can neither be derived or further resolved

Question 3

What is unit

Answer 3

the reference standard with which we carry out measurement of any physical quantity of the same kind

Question 4

fundamental quantities and its unit and symbol

Answer 4

L=m
M=kg
t=s
Temp=k
Electric current(I)=A

Question 5

Derived units of
1.Area
2.Volume
3.velocity
4.acceleration
5.force
6.density
7.pressure
8. work or energy
9. power
10. frequency
11. potential difference
12. resistance

Answer 5

1. area=lxb=m2
   2.volume=lxbxh=m3
   3.velocity=s/t=ms-1
   4.acceleration=v-u/t=ms-2
   5.force=mxa=N
   6.density-m/v=kgm-3
   7.pressure=f/a=Nm-2
   8.work or energy= fxs =Joule
   9.Power= w/t =watt
2. frequency= v/wavelength =Hz
3. Potential difference(v)= w/q =V
   12.Resistance= V/I = OHm

Question 5

what is derived unit

Answer 5

the unit of derived quantities. The unit which is expressed in terms of 2 or more fundamental units