1. Electromagnetic force is –

- Attractive in nature
- Repulsive in nature
- Attractive as well as repulsive in nature
- None of these

2. Which of the following force is not a fundamental force in nature?

- Gravitational force
- Electromagnetic force
- Strong nuclear force
- Tension

3. Strongest force in nature –

- Gravitational force
- Weak force
- Electromagnetic force
- Nuclear force

4. Which of the following fundamental forces is the strongest force?

- Gravitational force
- The electromagnetic force
- Strong nuclear force
- Weak nuclear force

5. Which of the following is the fundamental unit?

- Length, Force, Time,
- Length, Mass, Time,
- Mass, Volume, Height.
- Mass, Velocity, Pressure

6. 1 Fermi –

- 10⁻¹⁵mm
- 10⁻¹⁵cm
- 10⁻¹⁴m
- 10⁻¹⁵m

7. 1 Newton is equivalent to –

- 10⁴ dyne
- 10⁵ dyne
- 10⁶ dyne
- 10⁷ dyne

8. 1 micron is equal to –

- 10⁹ meter
- 10⁻¹² meter
- 10⁻⁶ meter
- 10⁻¹⁵ meter

9. 1 amu is equal to –

- 1.66 × 10⁻²⁴ kg
- 1.66 × 10⁻²⁷ kg
- 1.66 × 10⁻²⁵ kg
- 1.66 × 10⁻³⁰ kg

10. 1 nanometer is equal to –

- 10⁹ mm
- 10⁻⁶ cm
- 10-⁷ cm
- 10-⁹ m

11. SI unit of work is Joule and it is equivalent to –

- 10⁵ erg
- 10⁶ erg
- 10-⁷ erg
- 10⁷ erg

12. 1 light-year =

- 9.46 x 10¹⁵ m
- 94.6 x 10⁻¹⁵ m
- 3.08 x 10⁻¹⁴ m
- None of these

13. 1 parsec =

- 3 x 10⁸ m
- 3.08 x 10¹⁶ m
- 9.46 x 10¹⁵ m
- of these

14. I angstrom ( 1Å ) –

- 10⁻¹⁵ m
- 10⁻¹⁰ m
- 10⁻¹⁰ cm
- 10⁻¹⁵ cm

15. Parsec is the unit of –

- Time
- Distance
- Frequency
- Speed Ans

16. Light year is the unit of –

- Distance
- Time
- Speed
- Intensity of light.

17. Unit of Angular Momentum is –

- N – m
- kg m/s
- kg.m²/s
- kg².m²/s

18. SI unit of Stress is –

- Nm⁻¹
- Nm⁻²
- Nm²
- N-m

19. Unit of Magnetic Moment is –

- Am²
- Am⁻¹
- Am
- A/m²

20. SI unit of Montentum if Inertia is –

- Kgm
- Kgm⁻²
- Kgm²
- Kgm

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