JEE (Main) Physics: Units and Measurements MCQs

Questions 61-75

1. Which of the following is a derived SI unit for velocity?

   • A. Meter
   • B. Meter per second
   • C. Kilogram
   • D. Ampere

   Answer: B. Meter per second

2. The dimensional formula of acceleration is:

   • A. [M¹L⁰T^-1]
   • B. [M⁰L¹T^-2]
   • C. [M¹L¹T^-1]
   • D. [M¹L⁰T^-2]

   Answer: B. [M⁰L¹T^-2]

3. Which of the following quantities is not a derived unit?

   • A. Work
   • B. Power
   • C. Length
   • D. Force

   Answer: C. Length

4. The number of significant figures in the number 123.004 is:

   • A. 5
   • B. 6
   • C. 4
   • D. 7

   Answer: B. 6

5. Which of the following errors occurs due to the limitations of the measuring instrument?

   • A. Systematic error
   • B. Random error
   • C. Gross error
   • D. Instrumental error

   Answer: D. Instrumental error

6. The unit of force in the SI system is:

   • A. Newton
   • B. Kilogram
   • C. Meter
   • D. Pascal

   Answer: A. Newton

7. The dimensional formula of energy is:

   • A. [M¹L²T^-2]
   • B. [M²L¹T^-2]
   • C. [M¹L¹T^-1]
   • D. [M¹L¹T^-3]

   Answer: A. [M¹L²T^-2]

8. Which of the following quantities is dimensionless?

   • A. Force
   • B. Energy
   • C. Refractive index
   • D. Temperature

   Answer: C. Refractive index

9. The least count of a measuring instrument is:

   • A. The smallest measurement that the instrument can make
   • B. The error in the measurement
   • C. The maximum range of the instrument
   • D. The smallest error in the instrument

   Answer: A. The smallest measurement that the instrument can make

10. The dimensional formula of pressure is:

    • A. [M¹L^-1T^-2]
    • B. [M¹L¹T^-2]
    • C. [M¹L⁰T^-2]
    • D. [M¹L^-2T^-2]

    Answer: D. [M¹L^-2T^-2]

11. The error due to the observer’s reaction time is called:

    • A. Random error
    • B. Systematic error
    • C. Gross error
    • D. Instrumental error

    Answer: C. Gross error

12. Which of the following is an example of a derived unit?

    • A. Kilogram
    • B. Meter
    • C. Joule
    • D. Ampere

    Answer: C. Joule

13. What is the dimensional formula of acceleration due to gravity?

    • A. [M¹L¹T^-2]
    • B. [M⁰L¹T^-2]
    • C. [M¹L¹T^-1]
    • D. [M⁰L⁰T^-2]

    Answer: B. [M⁰L¹T^-2]

14. In the number 0.00701, how many significant figures are there?

    • A. 2
    • B. 3
    • C. 4
    • D. 5

    Answer: B. 3

15. Which of the following is not a fundamental unit in the SI system?

    • A. Meter
    • B. Kilogram
    • C. Ampere
    • D. Joule

    Answer: D. Joule

   l   

Note/Caution: studentsbizz.com does not promise a job or an interview in exchange for money. Fraudsters may ask you to pay under the pretext of a registration fee or refundable fee, but please be aware that legitimate employers will not require such payments.

Join in Our Groups

Home Latest Jobs Syllabus Projects Previous Question Papers Entrance Exam Notifications Multiple Choice Question

@ 2025 Students Bizz Platform. All Rights Reserved.