Unit of energy in SI system is 

1. Erg

2. Calorie

3. Joule

4. Electron volt

Temperature can be expressed as a derived quantity in terms of any of the following:

A cube has a numerically equal volume and surface area. The volume of such a cube is :

1. 216 units

2. 1000 units

3. 2000 units

4. 3000 units

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

Wavelength of ray of light is $0.00006m$. It is equal to 

1. $6microns$

2. $60microns$

3. $600microns$

4. $0.6microns$

Unit of power is:

1. Kilowatt

2. Kilowatt-hour

3. Dyne

4. Joule

Which is the correct unit for measuring nuclear radii

1. Micron

2. Millimetre

3. Angstrom

4. Fermi

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. $1m/\sec$

Electron volt is a unit of 

1. Charge

2. Potential difference

3. Momentum

4. Energy