units and measurements-- quiz

The dimensions of kinetic energy is same as that of

• force

• pressure

• work

• momentum

Light year is a unit of

• distance

• time

• light intensity

• brightness

A physical quantity is one which

• scalar quantity

• vector quantity

• can be measured

• cannot be measured

The unit of speed is

• fundamental unit

• derived unit

• neither fundamentral nor derived

• supplementary un it

In SI units, all energies are measured in

• calorie

• newton

• joule

• kilowatthour

 $E=\frac{a}{\left(b+x^2\right)t}$  This is an energy equation. and b are constants. x--distance t--time.  The dimension of b is

•  $M^0L^1T^0$  

•  $M^{^{ }0}L^2T^0$  

•  $M^1L^2T^1$  

•  $M^1L^1T^1$  

solid angle is measure in

• steradian

• radian

• degree

• arc minute

This is a dimensionless quantity

• height

• temperature

• impulse

• angle

The largest unit of distance is

• lightyear

• astronomical unit

• parsec

• kilometre

1 degree is equal to

• $\frac{\pi}{180}$

• $\frac{\pi}{360}$

• $\frac{180}{\pi}$

• $\frac{360}{\pi}$