1.1 PHYSICAL QUANTITIES (REVISION)

Which of the following is a derived quantity?

• Mass

• Length

• Weight

• Temperature

What is the S.I unit for density?

• g cm³

• g cm^-3

• kg m³

• kg m^-3

Which pair of physics quantity and SI unit is correct?

• Physical quantity: Electric Current

  SI unit: Ampere

• Physical Quantity: Pressure

  SI unit: Newton

• Physical quantity: Weight

  SI unit: kilogramme

• Physical quantity: Force

  SI unit: Joule

Which quantity is base quantity?

• Potential difference

• Electric current

• Electric energy

• Electric Power

Which of the following SI unit is correct for each quantity?

• Quantity: Mass

  SI unit: Gram（g）

• Quantity: Time

  SI unit: Minute（min）

• Quantity: Length

  SI unit: Centimeter (cm)

• Quantity: Temperature

  SI unit: Kelvin (K)

Newton (N) is a unit for weight. Another unit for weight is kilogram metre per second per second ( kg m s^-2). Which statement is correct?

• 1000 N = 1 kg m s^-2

• 100 N = 1 kg m s^-2

• 10 N = 1 kg m s^-2

• 1 N = 1 kg m s^-2

Which quantity is a vector quantity?

• Mass

• Energy

• Pressure

• Momentum

Which pair of quantities is correct?

• Scalar quantity: has magnitude only

  Vector quantity: has magnitude only

• Scalar quantity: has direction only

  Vector quantity: has magnitude only

• Scalar quantity: has magnitude only

  Vector quantity: has magnitude and direction

• Scalar quantity: has magnitude and direction

  Vector quantity: has direction only

Which of the following is not a Metric unit?

• Gallon

• Milimeter

• Kilogram

• Litre

Which measuring instrument measures vector quantity?

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