**Important Questions in Physics Paper-II for NET Exams**

1.

**Consider Kirthika has a hammer weighing 3 kg. If its velocity = 10 m/s, strikes against the head**

**of a spike and drives it into a block of wood. Gradually the hammer comes to rest in 0.025 s. Now, what should be the impulse of the ball?**

- 20Ns
- 30Ns
- 12Ns
- 11Ns

**2.Which of the following has boundary layer**

- flow of real fluids
- flow of ideal fluids
- both of the above
- none of the above

**3.What is a large Reynold number indication?**

- It is an indication of laminar flow of the fluid
- It is an indication of steady flow of the fluid
- It is an indication of highly turbulent flow of the fluid
- both 1 & 2

**4. Among w**

**hich one of the following had proposed the first law of thermodynamics as a special case?**

- Newton's law
- Joule's Law
- Green's Law
- Charle's Law

**5.Which one of the following is the supporting statement for- " The temperature of a gas is the measure of"**

- average distance between gas molecules
- average kinetic energy between the gas molecules
- average potential energy between the gas molecules
- average momentum between the gas molecules

**6.In a turbulant flow the shear stress is caused by**

- density of the fluid
- volume of the fluid
- eddy viscosity of the fluid
- dynamic adhesive force between the fluid molecules

**7.What does the diesel cycle consist of?**

- 2 isothermal+1 constant pressure+ 1 constant volume pressure
- 2 adiabatic +2 constant volume pressure
- 2 adiabatic +1 constant pressure+ 1 constant volume pressure
- 2 isothermal+ 2 constant pressure

**8.Which among the given below option is related to Newton's well known phrase - ‘quantity of motion’?**

- momentum
- force
- acceleration due to gravity
- all of the above

**9.Which one of the following is the correct reason for the absence of atmosphere on the moon?**

- Because the escape velocity of gas molecules is less than their root mean square velocity.
- Because it is closer to the earth
- Because it revolves round the earth
- both 2 & 3

**10.Consider that you have two objects well named as A and B. Where A has a mass of 6 kg and B has a mass of 34 kg respectively. Then**

- A has more inertia than B
- B has more inertia than A
- both 1 & 2
- none of the above

**ANSWER KEY**

**Answer(1) :**

**2**

**Answer(2) : 1**

**Answer(3) : 3**

**Answer(4) : 4**

**Answer(5) : 1**

**Answer(6) : 3**

**Answer(7) : 3**

**Answer(8) : 1**

**Answer(9) : 1**

**Answer(10) : 2**