The first chapter of Class 11 Physics, "Units and Measurements," lays the foundation for understanding concepts that will be used throughout the course. It is essential to study this chapter thoroughly to grasp the fundamental principles that apply to all other chapters.

**Study Tips:**

**1. Read the NCERT Textbook:** Start by carefully reading the theory from the NCERT textbook. Pay attention to the definitions, formulas, and examples provided.

2. **Practice NCERT Exercises:** Try to solve all the exercises at the end of the chapter. If you need help, you can refer to the NCERT solutions for Class 11 Physics prepared by Merit Yard.

3. **Utilize Additional Resources:** Check out chapter-wise Physics questions curated by Merit Yard to test your understanding and improve your problem-solving skills.

4. **Expert Guidance:** Follow the NCERT Solutions for Class 11 Physics created by the expert faculty at Merit Yard to clarify any doubts.

5. **Revision Notes:** Access concise and comprehensive Class 11 Physics notes to reinforce your learning and prepare for exams effectively.

**LEVEL 2 TYPE QUESTIONS**

**1. Which of the following quantity is unitless?****2. Which of the following is smallest unit?****3. 'Parsec' is the unit of–****4. Dimensions of relative density is?****5. The dimensions of frequency are:****6. The dimensions of wavelength are:****7. Which one of the quantities below has dimensions equal to [ MLT**^{-2}]?**8. Out of the following pairs which one does not have identical dimensions?****9. Which of the following pairs of physical quantities does not have the same dimensional formula?****10. The ratio of the dimensions of Planck's constant and that of the moment of inertia is:****11. One nautical mile is 6080 ft. The same in kilometre is:****12. One horse power is equal to:****13. The area of room is 10m**^{2}. The same in ft^{2}is:**14. The dimensional formula for latent heat is:****15. Solar constant is defined as energy received by earth per cm**^{2}per minute. The dimension of solar constant are:**16. The unit of current element is ampere metre. The dimensions of current element are:****17. The dimensional formula for electric potential is:****18. The dimensions of universal gravitational constant are:****19. Dimensional formula of angular momentum is:****20. Dimensions of electrical resistance is:****21. Which one of the following pairs represents the correct dimension of the coefficient of viscosity?****22. What is the % error in measurement of ‘T’ of a pendulum if maximum errors in the measurement of ‘l’ and ‘g’ are 2% & 4% respectively?****23. If error in measuring diameter of a circle is 4%, the error in circumference of the circle would be:****24. The error in measuring the side of a cube is ±1%. The error in the calculation of the volume of the cube will be about:****25. The percentage errors in the measurement of mass and speed are 2% and 3% respectively. How much will be the maximum error in the estimate of kinetic energy obtained by measuring mass and speed?****26. The length of a rod is (11.05 ± 0.05) cm. What is the total length of 2 such rods?****27. If V = At + Bt**^{2}+ Ct^{3}, where v is velocity and t is time, the dimensional formula of B is:**28. A force F is given by F = at + bt**^{2}where t is time. The dimensions of a and b are:

** **

** **

** **

** **

^{-3}]

^{1}L

^{-3}]

^{2}L

^{-6}]

** **

^{0}L

^{0}T

^{-1}]

^{0}L

^{0}T]

^{0}L

^{0}T

^{-2}]

** **

^{0}L

^{0}T

^{0}]

^{0}L

^{1}T

^{0}]

^{0}L

^{-1}T

^{0}]

** **

^{2}

^{2}/r

** **

** **

** **

** **

** **

** **

^{2}

^{2}

^{2}

** **

^{0}L

^{2}T

^{-2}

^{2}T

^{-1}

^{-2}

^{2}T

^{-2}

** **

^{1}L

^{2}T

^{-3}]

^{2}L

^{0}T

^{-1}]

^{0}T

^{-3}]

^{-2}]

** **

^{2}TA]

^{2}]

** **

^{2}T

^{-3}A

^{-1}]

^{-3}A

^{-1}]

^{2}T

^{-3}K

^{-1}]

** **

^{2}T

^{-1}]

^{-2}L

^{3}T

^{-2}]

^{-2}L

^{2}T

^{-1}]

^{-1}L

^{3}T

^{-2}]

** **

^{1}L

^{2}T

^{-1}]

^{2}L

^{2}T

^{-2}]

^{1}L

^{2}T

^{-3}]

^{1}L

^{1}T

^{-1}]

** **

^{2}T

^{-3}A

^{-1}]

^{2}T

^{-3}A

^{-2}]

^{3}T

^{-3}A

^{-2}]

^{-1}L

^{3}T

^{3}A

^{2}]

** **

^{-1}T

^{-2}]

^{-1}]

^{-1}T

^{-1}]

^{-2}T

^{-2}]

** **

** **

** **

** **

** **

** **

^{0}L

^{2}T

^{0}]

^{0}T

^{0}]

^{0}L

^{0}T]

^{0}LT

^{-3}]

** **

^{-3}] and [MLT

^{-4}]

^{-4}] and [MLT

^{-3}]

^{-1}] and [MLT

^{-2}]

^{-2}] and [MLT

^{0}]

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