Curie is a unit of 

1. Energy of $\gamma$-rays

2. Half life

3. Radioactivity

4. Intensity of $\gamma$-rays

Hertz is the unit of

1. Frequency

2. Force

3. Electric charge

4. Magnetic flux

One pico Farad is equal to

1. ${10}^{-24}F$

2. ${10}^{-18}F$

3. ${10}^{-12}F$

4. ${10}^{-6}F$

In SI, Henry is the unit of 

1. Self inductance

2. Mutual inductance

3. (1) and (2) both

4. None of the above

The unit of $e.m.f.$ is 

1. Joule

2. Joule-Coulomb

3. Volt–Coulomb

4. Joule/Coulomb

Unit of self inductance is [This question includes concepts from 12th syllabus]

1. $\frac{Newton-\sec ond}{Coulomb\times Ampere}$

2. $\frac{Joule/Coulomb\times Second}{Ampere}$

3. $\frac{Volt\times metre}{Coulomb}$

4. $\frac{Newton\times metre}{Ampere}$

To determine Young's modulus of a wire, the formula is $Y=\frac{F}{A}\times \frac{L}{\Delta L};$ where L = length, A = area of cross-section of the wire, $\Delta L=$change in length of the wire when stretched with a force F. The conversion factor to change it from CGS to MKS system is

1. 1

2. 10

3. 0.1

4. 0.01

Young's modulus of a material has the same units as

1. Pressure

2. Strain

3. Compressibility

4. Force

One yard in SI units is equal :

1. 1.9144 metre

2. 0.9144 metre

3. 0.09144 kilometre

4. 1.0936 kilometre

Which of the following is the smallest unit?

1. Millimetre

2. Angstrom

3. Fermi

4. Metre