The density of wood is $0.5gm/cc$ in the CGS system of units. The corresponding value in MKS units is :

1. 500

2. 5

3. 0.5

4. 5000

Mach number is equal to one when velocity of object is equal to:

1. Velocity of light

2. Velocity of sound $(332m/\sec )$

3. $1km/\sec$

4. $1m/\sec$

Volt/metre is the unit of 

1. Potential

2. Work

3. Force

4. Electric field intensity

The unit of surface tension in SI system is

1. $Dyne/c{m}^2$

2. $Newton/m$

3. $Dyne/cm$

4. $Newton/m^2$

The velocity of a particle depends upon as $v=a+bt+c{t}^2$; if the velocity is in $m/\sec$, the unit of a will be 

1. $m/\sec$

2. $m/{\sec }^2$

3. $m^2/\sec$

4. $m/{\sec }^3$

$Erg-m^{-1}$ can be the unit of measure for 

1. Force

2. Momentum

3. Power

4. Acceleration

Which of the following represents a volt :

1. Joule/second

2. Watt/Ampere

3. Watt/Coulomb

4. Coulomb/Joule

If the unit of length and force be increased four times, then the unit of energy is 

1. Increased 4 times

2. Increased 8 times

3. Increased 16 times

4. Decreased 16 times

Ampere - hour is a unit of 

1. Quantity of electricity

2. Strength of electric current

3. Power

4. Energy

The unit of specific resistance is 

1. Ohm / cm²

2. Ohm / cm

3. Ohm - cm

4. (Ohm - cm)^-1