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 which 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
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