Electron volt is a unit of
(1) Charge
(2) Potential difference
(3) Momentum
(4) Energy
Temperature can be expressed as a derived quantity in terms of any of the following:
1. | Length and mass | 2. | Mass and time |
3. | Length, mass, and time | 4. | None of the above |
The density of wood is in the CGS system of units. The corresponding value in MKS units is :
(1) 500
(2) 5
(3) 0.5
(4) 5000
Which is the correct unit for measuring nuclear radii
(1) Micron
(2) Millimetre
(3) Angstrom
(4) Fermi
Volt/metre is the unit of
(1) Potential
(2) Work
(3) Force
(4) Electric field intensity
The velocity of a particle depends upon as ; if the velocity is in , the unit of a will be
(1)
(2)
(3)
(4)
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
The unit of specific resistance is
(1) Ohm / cm2
(2) Ohm / cm
(3) Ohm - cm
(4) (Ohm - cm)-1
If \(u_1\) and \(u_2\) are the units selected in two systems of measurement and \(n_1\) and \(n_2\) are their numerical values, then:
1. | \(n_1u_1=n_2u_2\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \) |
2. | \(n_1u_1+n_2u_2=0\) |
3. | \(n_1n_2=u_1u_2\) |
4. | \((n_1+u_1)=(n_2+u_2)\) |
If , where x is the distance travelled by the body in kilometres while t is the time in seconds, then the units of b are
(1)
(2)
(3)
(4)