Measurement of Physical Quantities

What are the commonly used units for measuring length?

Which method is used for measuring large irregular solids?

What is the basis for clocks and digital timers?

• Quartz crystals

• Sand

• Water

• Pendulum

Scalar quantities have only (a)   .

Vector quantities have both magnitude and ________.

• direction

• speed

• mass

• temperature

Which of the following is a scalar quantity?

• Acceleration

• Temperature

• Force

• Velocity

What is the unit of frequency?

• Hertz

• Newton

• Joule

• Pascal

Which of the following devices uses a pendulum?

• Stopwatch

• Quartz watch

• Grandfather clock

• Digital clock

What is the unit of force?

• Watt

• Joule

• Newton

• Pascal

Which of the following is a vector quantity?

• Displacement

• Mass

• Speed

• Temperature