Physical Quantities and Units
Physics ⇒ Mechanics
Physical Quantities and Units starts at 6 and continues till grade 12.
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See sample questions for grade 12
Define dimensional analysis.
Define the term 'physical quantity'.
Explain the difference between fundamental and derived units with examples.
Express 1 joule in terms of base SI units.
A block has a mass of 500 g. Express this mass in kilograms using scientific notation.
A car travels 100 km in 2 hours. What is its average speed in m/s?
A force of 10 N acts on a mass of 2 kg. What is the acceleration produced?
A force of 20 N is applied to move a box 5 m. Calculate the work done.
Which of the following is a correct statement? (1) All physical quantities have units. (2) All physical quantities are vectors. (3) All units are SI units. (4) All derived quantities are scalars.
Which of the following is a derived physical quantity? (1) Length (2) Mass (3) Velocity (4) Time
Which of the following is a scalar quantity? (1) Displacement (2) Velocity (3) Force (4) Mass
Which of the following is a vector quantity? (1) Speed (2) Distance (3) Displacement (4) Energy
Fill in the blank: The SI base unit for electric current is ________.
Fill in the blank: The SI base unit for temperature is ________.
The SI unit of energy is ________.
The SI unit of frequency is ________.
State whether the following statement is true or false: 'The unit of power is joule.'
True or False: The kilogram is the SI base unit for mass.
True or False: The SI unit of acceleration is m·s-2.
True or False: The SI unit of density is kg·m-3.
