1. Unit of inertia
- Centimeter
- Kg
- [ML²]
- None of these
2. Dimension of constant term.
- [M⁰L⁰T⁰]
- [ML-¹T-¹]
- [ML²]
- None of these
3. Vector quantity has
- Magnitude only
- Direction only
- Magnitude as well as direction both
- None of these
4. Definition of force comes out from
- First law of motion
- Second law of motion
- Third law of motion
- 0th law of thermodynamics
5. The Formula of impulse is ;
- Force * small interval of time
- Mass * Force
- Mass * small interval of time
- None of them
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6. Which is the correct relation
- v = w/r
- w = v/r
- r = v.w
- None of them
7. When a body moves on a circular path the value of centrifugal acceleration is
- a = v²/r
- a = v².r
- a = r/v²
- None of these
8. A body moves on a circular path from a fixed point and after completion of a circle reach the same point then work done is :
- Maximum
- Minimum
- Zero
- None of these
9. Lubricants
- Increases the friction
- Decreases the friction
- Neither increases nor decreases the friction.
- None of these
10. The formula of power is
- P = Force * Velocity
- Power = Work done * Time
- P = Work done * Energy
- P = Force * Energy
11. A body of mass 'm' moving with velocity 'v' then kinetic energy of the body is :
- K.E = 2mv²
- K.E = v² / 2m
- K.E = 1/2 mv²
- K.E = m²/2v
12. In absence of external cause the total energy of the system is :
- Variable
- Constant
- 1 and 2 both are true
- Neither 1 nor 2 is true
13. Torque () is
Ans. (b)
14. Moment of inertia of a ring about an axis passing through its centre and perpendicular to its plane is :
- 1/2 MR²
- 2MR²
- MR²
- (2/5) MR²
15. If THE RADIUS OF OF GYRATION INCREASES THE ANGULAR VELOCITY OF THE free revolving system
- Decreases
- Increases
- Remains the same
- None of these
16. Strain is
- Change in length per unit original length
- Change in volume per unit original volume.
- 1 and 2 both
- Neither 1 nor 2
17. Pressure is
- Force * Area
- Area / Force
- Force / Area
- Force * Displacement
18. Cohesive force is greater
- Mercury (Hg)
- Water
- K - oil
- None of these
19. In conduction heat transmitted by the process
- Displacement of the particle of medium
- Particle remains the same place and heat energy transmitted.
- Needs no media to propagate it.
- None of them
20. Specific heat capacity is greater for
- Air
- Wood
- Iron
- Water
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