1.1 Dimensions of physical quantities

What is the SI unit for Work

• Joule/s

• Joule

• Newton

• Pascal

What is the couple of quantities have a same unit?

• Energy and force

• Energy and Work

• Energy and power

• Work and power

derived quantities are

• luminous intensity

• Time

• Amout of substance

• area

• Length

which of the S.I units of the quantities given is corrent?

• temperature - kelvin

• Time - minutes

• Mass-gram

• Length-centimeter

The base SI unit of mass is the

• Microgram

• Miligram

• Kilogram

• Gram

The equation below is dimensionally correct. P and v represent pressure and velocity respectively. the unit of a is similar to that of?

 $P\ +\ av^2\ =\ b$  

• Mass

• Volume

• Density

• Force

10mm is equal to

• 1cm

• 1m

• 1dm

• 10cm

Express 2.25 m in cm

• 225 cm

• 2.25 cm

• 20025 cm

• 2250 cm

which of the following is a fundamental physical quantities ?

• speed

• area

• volume

• time

Suppose A = BC, where A has the dimension L/M and C has the dimension L/T. Then B has the dimension:

• $T/M$

• $L^2/TM$

• $\frac{TM}{L^2}$

• $\frac{L^2T}{M}$