```
Question. For ___________ flow the path of the fluid particles cannot be tracked?
```
- Laminar
- Streamline
- Turbulent
- Both A and B

```
Question. A wire of resistance R is coiled inductively so that its inductance is L. The impedance of the coil at a frequency of f is_______________?
```
- (R+2πfL)
- R+1/2πfL
- (R2+f2L2)
- (R2+4π2f2L2)

```
Question. Newton estimated the speed of sound _____________________?
```
- 281m/sec
- 333m/sec
- 340m/sec
- all of the above

```
Question. An inductor may store energy in ________________?
```
- Its electric field
- Its coils
- Its magnetic field
- Both electric and magnetic fields

```
Question. Two identical coaxial circular loops carry equal currents in the same direction. If the loops approach each other the current in______________?
```
- Each increase
- Each decrease
- Each remains the same
- One increases whereas that in the other decreases

```
Question. At constant temperature the graph between V and 1/P is_____________?
```
- Hyperbola
- Parabola
- A curve of any shape
- A straight lime

```
Question. The drag force is given by_________________?
```
- Newtons law
- Pascals law
- Gauss law
- Stokes law

```
Question. The unit of force is _________ and its symbol is ______________ Which is the correct pair ?
```
- Newton, n
- Newton, N
- newton, n
- newton, N

```
Question. The number 76.85 is rounded off up to two significant figures as_____________?
```
- 76.8
- 77
- 76.9
- None of these

```
Question. The bulk properties of materials such as their mode of fracture can be related to their____________________?
```
- Polymerization
- Cleavage
- Microstructure
- Dislocation

```
Question. Magnification of the astronomical telescope is_____________?
```
- fo+fe
- fo/fe
- fe/fo
- (1+fo/fe)L/fo

```
Question. An inductive coil has a resistance of 100Ω. When an AC signal of frequency 1000Hz is fed to the coil the applied voltage leads the current by 45Ω. What is the inductance of the coil ?
```
- 10mH
- 12mH
- 16mH
- 20mH

```
Question. A moving coil galvanometer of resistance 100? gives half scale deflection for a current of 20mA. What will be the potential difference across it ?
```
- 4 volt
- 5 volt
- 2 volt
- 0.4 volt