C11P Raneem - Units-1

3,400 in scientific notation is____.

• 3.4 x 10⁴

• 3.4 x 10³

• 34 x 10³

• 34 x 10⁴

Which of the following instruments best to measure the thickness of paper?

• 
• 
• 
• 

450 kg to μg

• 4.5 x 10⁹ μg

• 5.4 x 10¹⁰ μg

• 5.4 x 10¹¹ μg

• 4.5 x 10¹¹ μg

Which of the following is a basic unit?

• area

• volume

• distance

• density

Light year is a unit of

• time

• distance

• sun light intensity

• mass

The sum of the numbers 436.32, 227.2 and 0.301 in appropriate significant figures is

• 663.821

• 664

• 663.8

• 663.82

The dimensions of Kinetic energy is same as that of

• Force

• Pressure

• Work

• Momentum

Which one is not a physical quantity

• length

• mass

• time

• kilogram

Physical quantities are quantities that consist of a numerical ​ (a)   and an ​ (b)   .

• magnitude
• unit
• direction
• symbol
• prefix

What is a base quantity?

• A base quantity is a physical quantity that is defined in terms of other quantities.
• A base quantity is a unit of measurement.
• A base quantity is a mathematical equation.
• A base quantity is a physical quantity that is not defined in terms of other quantities, but is used to define other quantities.