1. Absolute error of the measurement is

2.  Which of the following measurements is most precise?

3. Young’s modulus of steel is 1.9 × 10¹¹ N/m². When expressed in CGS units of dynes/cm², it will be equal to:

4. Which of the following is not the name of physical quantity?

5. The dimensions of kinetic energy is same as that of

6. The dimensional formula for angular momentum is same as that for:

7. The number of significant figures in 0.06900 is:

8. The atmospheric pressure is 106 dyne/cm². What is its value in SI unit?

9. A particle starting from the origin (0, 0) moves in a straight line in the (x, y) plane. Its coordinates at a later time are the path of the particle makes with the x-axis an angle of

10. What is the number of significant figures in (3.20 + 4.80) × 10⁵?

11. Light year is a unit of

12. The weight of a body is 12g. This statement is not correct because:

13. Give that the displacement of a particle is given by x = A² sin² kt, where t denotes the time. The unit of k is

14. Which of the following physical quantity is dimensionless?

15. ML-1T -2 is the dimensional formula of

16. Which of the following groups have different dimensions?

17. Physical quantities are

18. The mean length of an object is 5 cm. Which of the following measurements is most accurate?

19. Electron volt is a unit of

20. Resolution is