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Writing symbols of units - class-XI

Writing symbols of units

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

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

  1. Force
  2. Energy
  3. Power
  4. Stress
Question 2 Multiple Choice (Single Answer)

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

  1. True
  2. False
Question 3 Multiple Choice (Single Answer)

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

  1. 1 newton
  2. 1 Newton
  3. 1 NEWTON
  4. None of these
Question 4 Multiple Choice (Single Answer)

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

  1. $1GW$
  2. $1MW$
  3. $1TW$
  4. none of these
Question 5 Multiple Choice (Single Answer)

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

  1. 1 Watt
  2. 1 W
  3. 1 w
  4. 1 wt
Question 6 Multiple Choice (Single Answer)

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

  1. Lower initial letter
  2. Initial capital letter
  3. Lower letter
  4. All
Question 7 Multiple Choice (Single Answer)

The symbol for metre is written as :

  1. $m$
  2. $M$
  3. $\mu$
  4. All of the above 
Question 8 Multiple Choice (Single Answer)

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

  1. Lower initial letter
  2. Initial capital letter
  3. Lower letter
  4. All
Question 9 Multiple Choice (Single Answer)

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

  1. $10^2$
  2. $10$
  3. $10^{-1}$
  4. $10^{-2}$
Question 10 Multiple Choice (Single Answer)

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

  1. $m^3kg^{-1}s^{-2}$
  2. $m^2kg^{-2}s^{-1}$
  3. $m kg^{-3}s^{-1}$
  4. $m^2kg^{-3}s^{-2}$
Question 11 Multiple Choice (Single Answer)

The characteristic of a good unit is ..

  1. It should be universally accepted
  2. It should be invariable and not perishable
  3. It should be easily available & easy to reproduce
  4. All of these
Question 12 Multiple Choice (Single Answer)

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

  1. $n = 10^{-6}, \mu = 10^{-9}, p = 10^{-12}$
  2. $n = 10^{-6}, \mu = 10^{-12}, p = 10^{-9}$
  3. $n = 10^{-9}, \mu = 10^{-6}, p = 10^{-12}$
  4. $n = 10^{-12}, \mu = 10^{-9}, p = 10^{-6}$
Question 13 Multiple Choice (Single Answer)
Which definition is correct and uses only quantities rather than units?
  1. Density is mass per cubic metre
  2. Potential difference is energy per unit current
  3. Pressure is force per unit area
  4. Speed is distance traveled per second
Question 14 Multiple Choice (Single Answer)

Which of the statements are false?

  1. The units of physical quantity represented by volume is $cm^3$
  2. The unit of physical quantity represented by mass is $ton$
  3. The work done is represented by $\dfrac{kg}{m}$
  4. <span>The unit of physical quantity represented by weight is $Newton$</span>
Question 15 Multiple Choice (Multiple Answers)

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

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