UNITS AND DIMENSIONS

Unit of angular acceleration is SI system:

• N kg^-1

• m sec^-2

• rad sec^-2

• km kg^-1

Length cannot be measured by

• fermi

• debye

• micron

• light year

the dimensions of energy are

• $M\ L^{-1}\ T\ ^{-2}$

• $M\ L^{-2}\ T\ ^{-2}$

• $M\ L^2\ T\ ^{-2}$

• $M\ L^2\ T\ ^{-1}$

the following equation is dimensionally

 $v^2\ =v_0^2\ +2\ a\ d$  
Where :
 v is the velocity
a is the acceleration
d is the distance

• Correct

• incorrect

the mass per unit area has the dimensions of ......

• $M\ L^{-2}$

• $M\ L^{-1}$

• $M$

• $M^{\ -1}\ L^{ }$

Which one is not a dimension?

• Length

• Mass

• Time

• Kelvin

Which one is a unit?

• Feet

• Second

• Square meter

• All of the mentioned

When quantities with units are added or subtracted, they need to be expressed in the _____________ unit.

• Different

• Same

• Derived

• Fundamental

The unit of length SI (metric) system is

• cm

• m

• in

• yd

The below given distance units are arranged in an order of

nm, mm, dm, m, Km

• Smallest to largest

• Largest to smallest

• Not arranged in any correct order

• None of the mentioned