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Units and Dimensions

Total questions: 20

Worksheet time: 10mins

Name
Class
Date
1.

SI unit of Strength of electric current is

a)

ampere

b)

kelvin

c)

joule

d)

newton

2.

steradian is the unit of .......................

a)

plane angle

b)

solid angle

c)

mass

d)

time

3.

The units of fundamental quantities are called as

a)

derived units

b)

supplementary units

c)

fundamental units

d)

physical units

4.

Among the following a devired quantity is

a)

mass

b)

time

c)

solid angle

d)

force

5.

Among the following the correct relation is

a)

P = NU\frac{N}{U}

b)

N1N2 = U1U2

c)

N1U1 = N2U2

d)

U = PN

6.

20newton can also be written as

a)

20n

b)

20Newton

c)

20N

d)

20NEWTON

7.

The independent quantities are called as

a)

physical quantities

b)

Fundamental quantities

c)

Supplementary quantities

d)

Derived quantities

8.

SI unit of plane angle is

a)

radian

b)

steradian

c)

ampere

d)

kelvin

9.

The amount of matter present in an object is called

a)

Mass

b)

Time

c)

Amount of Substance

d)

Length

10.

Amount the following a physical quantity is

a)

Happiness

b)

sadness

c)

mass

d)

pain

11.

The desirable features of a standard unit are

a)

consistency

b)

Invariablity

c)

Reproduciblity

d)

Easily availibility

12.

The product of numerical value and unit is called

a)

magnitude

b)

standard unit

c)

number

d)

mass

13.

The number of supplementary quantities in SI are

a)

2

b)

5

c)

7

d)

3

14.

joule is the SI unit of ......................

a)

Force

b)

Energy

c)

Volume

d)

Density

15.

In MKS system, the unit of length is

a)

metre

b)

kilometre

c)

centimetre

d)

millimetre

16.

SI unit of Volume is

a)

m3

b)

m2

c)

m

d)

km3

17.

The relation between Numerical value(N) and a Unit (U) is

a)

N  UN\ \propto\ U

b)

N 1UN\ \propto\frac{1}{U}

c)

P NUP\ \propto\frac{N}{U}

d)

 N  1U2\ N\ \propto\ \frac{1}{U^2}

18.

The number of Fundamental physical quantities in SI are

a)

7

b)

2

c)

3

d)

8

19.

kelvin is the SI unit of .........................

a)

Amount of substance

b)

Thermodynamic temperature

c)

Luminous intensity

d)

Strength of electric current

20.

Among the following Fundamental physical quantity is

a)

force

b)

energy

c)

time

d)

area