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units and dimension

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Length cannot be measured by

a)

fermi

b)

debye

c)

micron

d)

light year

2.

Which one is not a dimension?

a)

Length

b)

Mass

c)

Time

d)

Kelvin

3.

Which one is a unit?

a)

Feet

b)

Second

c)

Square meter

d)

All of the mentioned

4.

When quantities with units are added or subtracted, they need to be expressed in the _____________ unit.

a)

Different

b)

Same

c)

Derived

d)

Fundamental

5.

The unit of length SI (metric) system is

a)

cm

b)

m

c)

in

d)

yd

6.

The below given distance units are arranged in an order of


nm, mm, dm, m, Km

a)

Smallest to largest

b)

Largest to smallest

c)

Not arranged in any correct order

d)

None of the mentioned

7.

Which of the following is not a base unit?

a)

meter

b)

newton

c)

kilogram

d)

second

8.

Which of the following is a derived unit?

a)

metre

b)

second

c)

kilogram

d)

joule

9.

1 nanometer equals to

a)

10 9-9 m

b)

10 3-3 m

c)

10 6-6 m

d)

10 1-1 m

10.
Which of the following numbers has three significant figures?
a)
1014 miles
b)
101 feet
c)
1000 yards
d)
all of the choices
11.
What is 0.658 rounded to 1 significant figure?
a)
0
b)
0.66
c)
0.7
d)
0.658
12.

What is the dimensional formula of surface tension T=  Fl\frac{F}{l}  

a)

ML0T-2

b)

ML2T-2

c)

M0L2T-2

d)

ML3T

13.

Which one of these options is NOT a fundamental quantity?

a)

Time

b)

Electric current

c)

Energy

d)

Luminous Intensity

14.

What is the DIMENSION of length?

a)

[M]

b)

[L]

c)

[T]

d)

[l]

15.

What is the DIMENSION of acceleration?

a)

L3

b)

[L/T]

c)

[L/T2]

d)

LT