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
The binding energy of a nucleon in a nucleus is of the order of a few
1. eV
2. Ergs
3. MeV
4. Volts
Parsec is a unit of :
1. Distance
2. Velocity
3. Time
4. Angle
If u1u1 and u2u2 are the units selected in two systems of measurement and n1n1 and n2n2 are their numerical values, then:
1. | n1u1=n2u2 n1u1=n2u2 |
2. | n1u1+n2u2=0n1u1+n2u2=0 |
3. | n1n2=u1u2n1n2=u1u2 |
4. | (n1+u1)=(n2+u2)(n1+u1)=(n2+u2) |
1 eV is
1. Same as one joule
2. 1.6×10−19J1.6×10−19J
3. 1 V
4. 1.6×10−19C1.6×10−19C
1kWh=1kWh=
1. 1000W1000W
2. 36×105J36×105J
3. 1000J1000J
4. 3600 J3600 J
Universal time is based on :
1. Rotation of the earth on its axis
2. Earth's orbital motion around the Sun
3. Vibrations of cesium atom
4. Oscillations of quartz crystal
Unit of moment of inertia in MKS system
1. kg×cm2kg×cm2
2. kg/cm2kg/cm2
3. kg×m2kg×m2
4. Joule×mJoule×m