JAC Class 11 Physics MCQ Chapter-1: Physical World and Measurements

1. Electromagnetic force is –

  • Attractive in nature
  • Repulsive in nature
  • Attractive as well as repulsive in nature
  • None of these
Answer
Attractive as well as repulsive in nature

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

  • Gravitational force
  • Electromagnetic force
  • Strong nuclear force
  • Tension
Answer
Gravitational force

3. Strongest force in nature –

  • Gravitational force
  • Weak force
  • Electromagnetic force
  • Nuclear force
Answer
Nuclear force

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

  • Gravitational force
  • The electromagnetic force
  • Strong nuclear force
  • Weak nuclear force
Answer
Strong nuclear force

5. Which of the following is the fundamental unit?

  • Length, Force, Time,
  • Length, Mass, Time,
  • Mass, Volume, Height.
  • Mass, Velocity, Pressure
Answer
Length, Mass, Time,

6. 1 Fermi –

  • 10⁻¹⁵mm
  • 10⁻¹⁵cm
  • 10⁻¹⁴m
  • 10⁻¹⁵m
Answer
10⁻¹⁵m

7. 1 Newton is equivalent to –

  • 10⁴ dyne
  • 10⁵ dyne
  • 10⁶ dyne
  • 10⁷ dyne
Answer
10⁵ dyne

8. 1 micron is equal to –

  • 10⁹ meter
  • 10⁻¹² meter
  • 10⁻⁶ meter
  • 10⁻¹⁵ meter
Answer
10⁻⁶ 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
Answer
1.66 × 10⁻²⁷ kg

10. 1 nanometer is equal to –

  • 10⁹ mm
  • 10⁻⁶ cm
  • 10-⁷ cm
  • 10-⁹ m
Answer
10-⁹ m

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

  • 10⁵ erg
  • 10⁶ erg
  • 10-⁷ erg
  • 10⁷ erg
Answer
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
Answer
9.46 x 10¹⁵ m

13. 1 parsec =

  • 3 x 10⁸ m
  • 3.08 x 10¹⁶ m
  • 9.46 x 10¹⁵ m
  • of these
Answer
3.08 x 10¹⁶ m

14. I angstrom ( 1Å ) –

  • 10⁻¹⁵ m
  • 10⁻¹⁰ m
  • 10⁻¹⁰ cm
  • 10⁻¹⁵ cm
Answer
10⁻¹⁰ m

15. Parsec is the unit of –

  • Time
  • Distance
  • Frequency
  • Speed Ans
Answer
Distance

16. Light year is the unit of –

  • Distance
  • Time
  • Speed
  • Intensity of light.
Answer
Distance

17. Unit of Angular Momentum is –

  • N – m
  • kg m/s
  • kg.m²/s
  • kg².m²/s
Answer
kg.m²/s

18. SI unit of Stress is –

  • Nm⁻¹
  • Nm⁻²
  • Nm²
  • N-m
Answer
Nm⁻²

19. Unit of Magnetic Moment is –

  • Am²
  • Am⁻¹
  • Am
  • A/m²
Answer
Am²

20. SI unit of Montentum if Inertia is –

  • Kgm
  • Kgm⁻²
  • Kgm²
  • Kgm
Answer
Kgm

These JAC MCQs for class 11 Physics will help students prepare for the board exam. For more study materials, such as solutions, model papers, syllabus, MCQ Questions, and the latest updates on the JAC Board, please visit our website at JACBoardSolutions.com.

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