Question 1

If units of mass and length are doubled and that of time remains same, in which quantity numberical value is unchanged?

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

Force
Energy
Power
Stress

Answer

Correct Option: D

Question 2

When a symbol is used to represent a unit named after a person, lower-case letters are used.

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

True
False

Answer

Correct Option: B

Question 3

The correct way to represent an unit amount of force is :

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

1 newton
1 Newton
1 NEWTON
None of these

Answer

Correct Option: A

Question 4

The correct way to represent ${10}^{9}W$ is

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

$1GW$
$1MW$
$1TW$
none of these

Answer

Correct Option: A

Question 5

Which of the following is the right way of expressing 1 watt of power?

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

1 Watt
1 W
1 w
1 wt

Answer

Correct Option: B

Question 6

The symbol for a unit which is not named in the honour of some scientist is written in

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

Lower initial letter
Initial capital letter
Lower letter
All

Answer

Correct Option: C

Question 7

The symbol for metre is written as :

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

$m$
$M$
$\mu$
All of the above

Answer

Correct Option: A

Question 8

Full name of the unit named in the honour of a scientist is written with

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

Lower initial letter
Initial capital letter
Lower letter
All

Answer

Correct Option: A

Question 9

The ratio of SI unit to CGS unit of $g$ is :

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

$10^2$
$10$
$10^{-1}$
$10^{-2}$

Answer

Correct Option: A

Question 10

SI unit of G is $Nm^2 kg^{-2}$. Which of the following can also be used as the SI unit of G?

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

$m^3kg^{-1}s^{-2}$
$m^2kg^{-2}s^{-1}$
$m kg^{-3}s^{-1}$
$m^2kg^{-3}s^{-2}$

Answer

Correct Option: A

Question 11

The characteristic of a good unit is ..

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

It should be universally accepted
It should be invariable and not perishable
It should be easily available & easy to reproduce
All of these

Answer

Correct Option: D

Question 12

The prefixes $nano (n), micro (\mu)$ and $pico (p)$ are often used with units.
Which row shows their correct values?

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

$n = 10^{-6}, \mu = 10^{-9}, p = 10^{-12}$
$n = 10^{-6}, \mu = 10^{-12}, p = 10^{-9}$
$n = 10^{-9}, \mu = 10^{-6}, p = 10^{-12}$
$n = 10^{-12}, \mu = 10^{-9}, p = 10^{-6}$

Answer

Correct Option: C

Question 13

Which definition is correct and uses only quantities rather than units?

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

Density is mass per cubic metre
Potential difference is energy per unit current
Pressure is force per unit area
Speed is distance traveled per second

Answer

Correct Option: C

Question 14

Which of the statements are false?

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

The units of physical quantity represented by volume is $cm^3$
The unit of physical quantity represented by mass is $ton$
The work done is represented by $\dfrac{kg}{m}$
The unit of physical quantity represented by weight is $Newton$

Answer

Correct Option: C

Question 15

Which of the following statements below should be followed while using the symbol for a unit of a physical quantity?

physics motion and measurement guidelines for writing the units conventions for the use of si units rules to write name and symbol for units of s.i. system

The symbol named after a scientist should begin with a capital letter.
They can take plural forms.
They can be written in full.
They should be written only in the agreed symbols while using symbols.

Answer

Correct Option: A,C,D

Description: Writing symbols of units
Number of Questions: 15
Created by: Akash Patil
Tags: physics physical world and measurement units and measurement: error analysis measurements and experimentation measurement and measuring instrument units and measurement motion and measurement units and measurements measurement

Writing symbols of units - class-XI

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