Physics 9-Ch1(Physical Quantities and Measurements)-MCQs

 

• The number of base units in SI are
• Which one of the following units is not a derived unit
• Amount of a substance terms pf numbers is measure in
• An interval of 200µs is equivalent to
• Which one of the following is the smallest quantity
• Which instrument is the most suitable to measure the internal diameter of a test tube
• A student claimed the diameter of a wire as 1.032 cm using Vernier Calipers up to what extent do you agree with it
• A measuring cylinder is used to measure
• A student noted the thickness of glass sheet using screw guage
• Significant figures is an expression are

The number of base units in are?

A:

3

B:

6

C:

7

D:

9

Which one of the following units is not a derived unit?

A:

Pascal

B:

Kilogram

C:

Newton

D:

Watt

Amount of a substance terms pf numbers is measure in?

A:

Gram 

B:

Kilogram 

C:

Newton 

D:

Mole

An interval of 200µs is equivalent to?

A:

0.2s

B:

0.02s

C:

$2\times 10^{-4}�$

D:

$2\times 10^{-6}�$

Which one of the following is the smallest quantity?

A:

0.01g

B:

2mg

C:

$100��$

D:

5000 ng

Which instrument is the most suitable to measure the internal diameter of a test tube?

A:

Metre rule 

B:

Vernier Callipers

C:

Measuring tap

D:

Screw guage 

A student claimed the diameter of a wire as 1.032 cm using Vernier Callipers up to what extent do you agree with it?

A:

1 cm

B:

1.0 cm

C:

1.03 cm 

D:

1.032 cm

A measuring cylinder is used to measure?

A:

Mass

B:

Area

C:

Volume 

D:

Level of liquid 

A student noted the thickness of glass sheet using screw guage. On the main scale, it reads 3 divisions while 8th division on the circular scale coincides with index line. Its thickness is?

A:

3.8 cm

B:

3.08 mm 

C:

3.8 mm

D:

3.08m

Significant figures is an expression are?

A:

All the digits

B:

All the accurately known digits 

C:

All the accurately known digits and the first doubtful digit 

D:

All the accurately known and all the doubtful digits