The dimensional formula of the coefficient of thermal conductivity is :
1. [M1L1T-3K-1][M1L1T−3K−1]
2. [M3L-1T-3K][M3L−1T−3K]
3. [M1L-3T-1K-1][M1L−3T−1K−1]
4. [M1L1T-3K][M1L1T−3K]
If L,Q,R represent inductance, charge, and resistance respectively, the units of
[This question includes concepts from 12th syllabus]
1. QRLQRL will be those of current
2. Q2R3L2Q2R3L2 will be those of energy
3. QLRQLR will be those of current
4. Q3R2LQ3R2L will be those of power
The quantity 12∈0E212∈0E2 has dimensional formula same as [This question includes concepts from 12th syllabus]
1. 12CV212CV2
2. 12LI212LI2
3. 12 B2μ012 B2μ0
4. Power
1. | Time | 2. | Mass |
3. | Distance | 4. | Energy |
The magnitude of any physical quantity:
1. | depends on the method of measurement. |
2. | does not depend on the method of measurement. |
3. | is more in the SI system than in the CGS system. |
4. | is directly proportional to the fundamental units of mass, length and time. |
Which of the following is not equal to a watt?
1. Joule/second
2. Ampere×× volt
3. ( Ampere)2×× ohm
4. Ampere/volt
Newton–second is the unit of
1. Velocity
2. Angular momentum
3. Momentum
4. Energy
Which of the following is not represented in correct unit
1. StressStrain=N/m2StressStrain=N/m2
2. Surface tension = N/mN/m
3. Energy =kg-m/sec
4. Pressure =N/m2
One second is equal to :
1. 1650763.73 time periods of Kr clock
2. 652189.63 time periods of Kr clock
3. 1650763.73 time periods of Cs clock
4. 9192631770 time periods of Cs clock
One nanometre is equal to:
1. 109mm
2. 10−6 cm
3. 10−7cm
4. 10−9cm